Abstract
Introduction: Syphilis is a sexually transmitted infection caused by the bacterium Treponema pallidum, and it continues to be a major public health problem worldwide. It can spread through various means, such as unprotected sex, mother to fetus, and blood transfusion. This study aimed to assess the seroprevalence of syphilis and associated factors among pregnant women attending antenatal care at public health facilities in Hawassa zuria woreda, Sidama, Ethiopia. Methods: A facility-based cross-sectional study design was conducted in Hawassa Zuria public health facilities from November 1-30, 2024. A total of 482 study participants were selected using systematic sampling techniques. Data were collected through structured interviews using a pretested questionnaire and reviewing records. Epi-data version 4.4 was used to code and enter the data, and SPSS version 26 was used for analysis. Bivariable logistic regression was employed to identify candidate variables for multivariable logistic regression with a significance level of ≤ 0.25. A multivariate logistic regression model was used to investigate factors associated with syphilis infection, p-value of <0.05 was considered statistically significant. Result: The seroprevalence of syphilis among pregnant women attending ANC clinics was 3.8% (95% CI: 3.61-3.99). Having multiple sexual partners (AOR = 3.68; 95% CI: 1.22 - 11.11), alcohol use (AOR =7.34; 95% CI: 2.31 - 23.36), and HIV positive women (AOR =10.22; 95% CI: 2.03 - 51.53) were significantly associated with syphilis infection. Conclusion and recommendation: Seroprevalence of syphilis was high. Having multiple sexual partners, HIV-positive women, and alcohol drinking were factors significantly associated with syphilis. Therefore, substantial efforts have to be made to provide regular health education for pregnant women at the antenatal clinic on the avoidance of risky behaviors, raise awareness on the transmission and prevention mechanisms of syphilis, promote safe sexual practices, and strengthen partner testing and treatment.
Keywords
Syphilis, Associated Factors, Pregnant Women, Antenatal Care
1. Introduction
Syphilis is a sexually transmitted infection (STI) caused by the bacterium Treponema pallidum, and it continues to be a major public health problem worldwide
. It can spread through various means, such as unprotected sex, mother to fetus, and blood transfusion
| [1] | WHO., Guideline on syphilis screening and treatment for pregnant women: World Health Organization. 2017. |
| [2] | Kojima N. and K. JD., An Update on the Global Epidemiology of Syphilis. Curr Epidemiol Rep, 2018. 5: p. 24-38. |
| [3] | Lendado TA., et al., Determinants of syphilis infection among pregnant women attending antenatal care in hospitals of Wolaita zone, Southern Ethiopia, 2020. PLOS ONE, 2022. 17(6). |
[1-3]
. During pregnancy, there is a specific concern regarding about the potential transmission of infection to the fetus through hematogenous spread
| [4] | Khan S., Menezes GA., and D. R., Seroprevalence of syphilis in patients attending a tertiary care hospital in Southern India. Asian Pac J Trop Biomed 2014. 4: p. 995-7. |
[4]
. Mother-to-child transmission of syphilis during pregnancy can result in adverse pregnancy outcomes such as early fetal death, stillbirth, premature birth, and low birth weight
| [5] | WHO., The global elimination of congenital syphilis: rationale and strategy for action. 2007, World Health Organization: Geneva. |
[5]
.
Despite widely available and affordable screening methods and treatment, Syphilis infection is a public health problem in pregnant women in Sub-Saharan Africa
| [4] | Khan S., Menezes GA., and D. R., Seroprevalence of syphilis in patients attending a tertiary care hospital in Southern India. Asian Pac J Trop Biomed 2014. 4: p. 995-7. |
| [6] | WHO., Global Incidence and Prevalence of Selected Curable Sexually Transmitted Infections. 2012. |
[4, 6]
. Most pregnant women with syphilis are not identified and treated promptly to prevent adverse effects on pregnancy. There is also discrepancies in antenatal care (ANC) availability and syphilis testing rates
| [1] | WHO., Guideline on syphilis screening and treatment for pregnant women: World Health Organization. 2017. |
| [7] | Cooper JM. and Sánchez PJ, Congenital syphilis. Seminars in perinatology. Elsevier, 2018. |
[1, 7]
.
Worldwide, around 357 million new cases of STIs were reported in 2015, syphilis accounting for an estimated 12 million cases, including 2 million in pregnant women. Sub-Saharan Africa accounting for 57% of all cases worldwide
| [8] | Clement ME., Okeke NL., and H. CB., Treatment of syphilis: a systematic review.. JAMA, 2017. 312: p. 1905-17. |
| [9] | Dodds F., Donoghue AD., and R. JL., Negotiating the sustainable development goals: a transformational agenda for an insecure world. Taylor & Francis, 2016. |
[8, 9]
. Approximately 200,000 stillbirths and infant deaths due to congenital syphilis in 2019, making it the second leading cause of preventable stillbirths worldwide
| [10] | Hoque M., et al., Prevalence, incidence and seroconversion of HIV and Syphilis infections among pregnant women of South Africa.. Southern African Journal of Infectious Diseases, 2021. 36(1): p. 296. |
[10]
. More than half of untreated maternal syphilis cases lead to adverse pregnancy outcomes such as spontaneous abortion, stillbirth, preterm birth, low birth weight, and neonatal death and congenital syphilis
| [5] | WHO., The global elimination of congenital syphilis: rationale and strategy for action. 2007, World Health Organization: Geneva. |
| [11] | Korenromp EL., et al., Global burden of maternal and congenital syphilis and associated adverse birth outcomes. Estimates for 2016 and progress since 2012.. PloS one, 2019. 14(2). |
| [12] | Befekadu B., Shuremu M., and Z. A., Seroprevalence of syphilis and its predictors among pregnant women in Buno Bedele zone, southwest Ethiopia: A community-based cross-sectional study.. BMJ Open, 2022. 12(8). |
[5, 11, 12]
.
World Health Organization (WHO) surveillance report shown that the global seroprevalence of syphilis among pregnant women attending ANC was 0.8%. The prevalence of syphilis in African region was 2%
| [13] | WHO., Report on global sexually transmitted infection surveillance. 2018, World Health Organization. |
[13]
. Also, the overall syphilis seroprevalence was 1.9% in Nigeria
| [14] | Isa M., et al., Prevalence of syphilis among pregnant women attending state specialist hospital Maiduguri, borno, Nigeria. Int J Res., 2014. 1(11): p. 523-530. |
[14]
, 3% in Khartoum
| [15] | Abdelmola AO., Prevalence and factors associated with syphilis among pregnant women attending antenatal care, Khartoum State, Sudan.. Int J Adv Med., 2018. 5(2): p. 2-6. |
[15]
, and 0.9% in Rwanda
| [16] | Mutagoma M., et al., The prevalence of syphilis infection and its associated factors in the general population of Rwanda: a national household-based survey. J Sexually Transmit Dis., 2016. 7(3). |
[16]
among pregnant women attending ANC. Ethiopia is a sub-Saharan African nation that experiences high levels of maternal syphilis and adverse pregnancy outcomes
| [17] | EPHI., Report on the 2014 Round Antenatal Care based Sentinel HIV Surveillance in Ethiopia.. 2015, The Ethiopia public health institution. |
[17]
. Studies conducted in Debre Berhan 5.1%
| [18] | Zinabie S., Belachew E., and Y. T., Sero-Prevalence of Syphilis and HIV and Associated Factors in Pregnant Women Attending Antenatal Care Clinics in Debre Berhan Public Health Institutions, Ethiopia. AJBLS, 2018. 6: p. 56. |
[18]
, Asella 2.4%
| [19] | Schönfeld A., Feldt T., and T. TB., Prevalence and impact of sexually transmitted infections in pregnant women in central Ethiopia.. Int J STD AIDS, 2018. 29: p. 251-8. |
[19]
, Jinka 4.8%
| [20] | Enbiale M., et al., Magnitude of syphilis serostatus and associated factors among pregnant women attending antenatal care in jinka town public health facilities, Southern Ethiopia. PLOS ONE, 2021. 16(9): p. 1-12. |
[20]
and South Gonder 3.7%
| [21] | Yideg YG. and A. BA., Prevalence of Syphilis among Pregnant Women Attending Antenatal Care Clinic, Sede Muja District, South Gondar, Northwest Ethiopia.. Journal of pregnancy., 2019. |
[21]
, revealed that the prevalence of syphilis.
There is complex relationship between HIV and syphilis. The ulcers associated with clinical syphilis increase the risk of HIV infection
| [22] | Lynn WA. and L. S., Syphilis and HIV: a dangerous combination.. Lancet Infect Dis., 2004 4(7): p. 456-66. |
[22]
, whereas the progression of HIV into AIDS has a significant outcome on the prognosis of syphilis management resulting mainly from immunosuppression
| [23] | Marra CM., et al., Cerebrospinal fluid abnormalities in patients with syphilis: association with clinical and laboratory features.. J Infect Dis., 2004. 189(3): p. 369-76. |
[23]
. Management of STIs resulted in 38% reduction in HIV infection rate
| [24] | Ng BE., et al., Population-based biomedical sexually transmitted infection control interventions for reducing HIV infection.. Cochrane Database Syst Rev, 2011 16(3). |
[24]
.
Studies indicate that factors such as maternal age, residence, socioeconomic status, education level, prenatal care, prostitution, multiple sexual partners, substance use, knowledge about STIs, partners’ educational status, partner occupation, number of pregnancies, history of abortions, history of STIs, HIV/AIDS status, and access to STI treatment were factors associated syphilis infection
| [25] | Melku M., Kebede A., and A. Z., Magnitude of HIV and syphilis seroprevalence among pregnant women in gondar, northwest ethiopia: a cross-sectional study. HIV/AIDS, 2015. 7: p. 175. |
| [26] | Endris M DT, Belyhun Y, and M. F., Seroprevalence of syphilis and human immunodeficiency virus infections among pregnant women who attend the University of Gondar teaching hospital, Northwest Ethiopia: a cross sectional study.. BMC Infect Dis., 2015. 15(1): p. 111. |
| [27] | Tsimis ME. and S. JS., Update on syphilis and pregnancy.. Birth Defects Research, 2017. 109(5): p. 347-352. |
[25-27]
.
WHO set an ambitious plan to reduce syphilis by 90% by 2030
| [28] | WHO., Global health sector strategy on sexually transmitted infections 2016-2021: toward ending STIs.. 2016. |
[28]
. This target should be supported by regular epidemiological surveillance in high-burden areas to guide intervention
| [29] | Newman L., et al., Global Estimates of the Prevalence and Incidence of Four Curable Sexually Transmitted Infections in 2015 Based on Systematic Review and Global Reporting.. PLoS One, 2017. 10(12). |
[29]
. Early diagnosis and treatment of syphilis during pregnancy are widely acknowledged as successful approaches to reduce syphilis transmission and adverse pregnancy outcomes
| [30] | Wijesooriya NS., et al., Global burden of maternal and congenital syphilis in 2008 and 2012: a health systems modelling study. The Lancet Global health., 2016. 4(8): p. 525-533. |
| [31] | Curry SJ., et al., Screening for syphilis infection in pregnant women: US Preventive Services Task Force reaffirmation recommendation statement. jama, 2018. 320(9): p. 911-917. |
[30, 31]
. In endemic countries, conducting ANC screening to detect and treat syphilis can result in 82% decrease in stillbirths, 64% decrease in preterm births, and 80% decrease in neonatal deaths
| [32] | Blencowe H., et al., Lives Saved Tool supplement detection and treatment of syphilis in pregnancy to reduce syphilis related stillbirths and neonatal mortality. BMC public health., 2011. 11(3): p. 9. |
[32]
.
According to Ethiopia Demographic and Health Survey, ANC visit was 62%, and syphilis screening was 44.6%
| [33] | CSA., Ethiopian Demographic and Health Survey report. 2016, The Central Statistical Agency. |
[33]
. However, there is wide variation from the WHO target of less than 50 congenital syphilis cases per 100,000 live births, at least 95% coverage in the first ANC visit, 95% syphilis testing, and 95% case treatment
| [5] | WHO., The global elimination of congenital syphilis: rationale and strategy for action. 2007, World Health Organization: Geneva. |
| [11] | Korenromp EL., et al., Global burden of maternal and congenital syphilis and associated adverse birth outcomes. Estimates for 2016 and progress since 2012.. PloS one, 2019. 14(2). |
[5, 11]
. Therefore, the objective of this study was to assess the seroprevalence of syphilis and its associated factors among pregnant women at public health facilities in Hawassa Zuria, Sidama, Ethiopia.
2. Method and Materials
2.1. Study Area and Period
A facility-based cross sectional study was conducted in Hawassa Zuria woreda, Sidama, Ethiopia. It is located 295 kilometers away from the capital, Addis Ababa, and 23 kilometers from Hawassa city. According to the 2024 woreda health office’s report, the total population is projected to be 182,215, and about 42,456 fall within the reproductive age (15-49) years. There are five public health facilities in the woreda: Dore Bafano Primary Hospital, Dado Health Center, Mekibesa Health Center, Tenkaka Health Center, and Shamena Health Center. The study was conducted from November 1-30, 2024, in those public health facilities.
2.2. Study Design
Facility based cross-sectional study
2.3. Source and Study Population
2.3.1. Source Population
All pregnant women are attending public health facilities for ANC in Hawassa zuria woreda during the study period.
2.3.2. Study Population
Randomly selected pregnant women attending public health facilities for ANC during the study period.
2.4. Eligibility Criteria
2.4.1. Inclusion Criteria
All selected pregnant women who attended public health facilities for ANC service in Hawassa zuria woreda during the data collection period.
2.4.2. Exclusion Criteria
Pregnant women with mental impairment and critical illness at data collection time were excluded from this study.
2.5. Sample Size Determination
The sample size was calculated by using a single population proportion formula, assuming a 95% confidence level, 4.8% of the seroprevalence of syphilis from a study conducted at Jinka Town
| [20] | Enbiale M., et al., Magnitude of syphilis serostatus and associated factors among pregnant women attending antenatal care in jinka town public health facilities, Southern Ethiopia. PLOS ONE, 2021. 16(9): p. 1-12. |
[20]
, Margin of error 2%, and 10% non-response rate.
n=
n= 438
By adding a 10% non-response rate, the final sample size was 482.
2.6. Sampling Methods
The study included the five public health facilities that offer ANC services in Hawassa zuria woreda. By using the previous months ANC flow of pregnant women as a baseline, there were a total of 975 pregnant women visited those public health facilities (Dore Bafano primary hospital 284, Shamena Health Center 215, Dado Health Center 133, Tenkaka Health Center 156, and Mekibesa Health Center 187) that fulfilled the eligibility criteria of the study. The number of pregnant women interviewed at each health facility was determined based on proportional allocation to size. The interval (K) was calculated by dividing 975 by the sample size of 482, resulting in 2 intervals. The lottery method was employed to select the first participant for the study at each health facility. Then, every other pregnant woman was interviewed, and a file checkup was conducted.
2.7. Data Collection and Quality Control
Data were collected using structured questionnaires which are prepared by reviewing different literatures relevant to address the study objectives. Relevant experts reviewed the data collection tool to ensure it aligned with the study objective. The data was collected through exit interviews, and document reviewing. The data collection tool was pre-tested on 5% of the sample at the Yirba primary hospital one week prior to the data collection. Five BSc midwives were appointed as data collectors, along with one health officer serving as the supervisor. One-day training was given to the data collectors and supervisor on study purpose, data collection tool, data handling and maintaining respondent’s confidentiality. The syphilis and HIV serostatus results from the medical records were examined. Pregnant women whose medical records were unavailable were not included in the analysis.
2.8. Operational Definitions
1)
Syphilis:- In this study, a case of syphilis was considered when the Rapid Plasma Reagin (RPR) or Venereal Disease Research Laboratory (VDRL) test was reactive for syphilis infection among pregnant women
| [34] | Balla E. and D. GG., Features of syphilis seropositive pregnant women raising alarms in Hungary, 2013-2016.. European Journal of Obstetrics & Gynecology and Reproductive Biology., 2018. 228: p. 274-8. |
[34]
.
2) Knowledge of STI: - Nine questions were used for assessing the level of knowledge. The total score of each study participant was converted to a percentage and used to categorize them into those with good knowledge (score>= 50).
3)
Alcohol drinking: - Consuming alcohol at least once per month in the last twelve months (above the recommended level). This means above 2 bottles for males and 1 bottle for females
| [33] | CSA., Ethiopian Demographic and Health Survey report. 2016, The Central Statistical Agency. |
[33]
.
2.9. Data Processing and Analysis
Data were coded, entered into Epi-Data version 4.4, and then exported to SPSS version 26 for analysis. Data cleaning was performed by running the frequency of each variable to check the accuracy, inconsistency and missed value of the data. Variables were checked by the chi-square test to identify the association between each categorical variable and dependent variables. Bivariable logistic regression was employed to identify candidate variables for multivariable logistic regression with a significance level of ≤ 0.25. The degree of association between independent and dependent variables was assessed by using an odds ratio with a 95% confidence interval, and variables with a P-value <0.05 in the multivariable logistic regression model were considered statistically significant. Model fitness was checked by Hosmer and Lemeshow Goodness of fit test and Multicollinearity was assessed using the method variance inflation factors. Its value was observed between one and two for all independent variables entered to assess Multicollinearity. Descriptive statistics were done and summarized using texts, tables, and graphs based on the type of variables.
2.10. Ethical Consideration
Ethical clearance was obtained from the Institutional Research Ethical Review Committee (IRERC) at Pharma college school of Graduate studies. Permission letters were acquired from the Hawassa Zuria Woreda health office and formal letters were written to each health facility from the Woreda health office. Informed verbal consent was obtained from each study participants to confirm their willingness to participate after explaining the objective of the study. To keep their privacy each of the pregnant women was interviewed separately in a quiet room prepared for this purpose. Participants were guaranteed that their responses would remain confidential from both data collectors and supervisor. The data collected was solely used for the study's purposes, and confidentiality was upheld throughout the study.
3. Result
3.1. Socio-demographic Characteristics of Participants
About 479 pregnant women participated in the study, making the response rate of 99.3%. The mean age of respondents was 25.95 (±4.72) years. The majority of 469 (97.9%) of study participants were married and 233 (48.6%) participants attended primary education. More than three-fourths (82.7%) of the pregnant women were rural residents and 288 (60.1%) were housewives. More than one-third (36.1% of participants earned >3000 ETB.
Table 1. Socio-demographic characteristics of study participants in Hawassa zuria woreda public health facilities, Sidama, Ethiopia, 2024.
Variables | Category | Frequency | Percent |
Age category | 18-24 | 201 | 42 |
25-29 | 156 | 32.6 |
30-42 | 122 | 25.5 |
Marital status | Married | 469 | 97.9 |
Divorced | 3 | 0.6 |
Widowed | 4 | 0.8 |
Single | 3 | 0.6 |
Religion | Protestant | 439 | 91.6 |
Muslim | 23 | 4.8 |
Orthodox | 12 | 2.5 |
Residence | Rural | 398 | 82.7 |
Urban | 83 | 17.3 |
Education | Non | 91 | 19 |
Primary | 233 | 48.6 |
Secondary | 123 | 25.7 |
Collage and above | 32 | 6.2 |
Occupation | Housewife | 288 | 60.1 |
Merchant | 98 | 20.5 |
Private employee | 30 | 6.3 |
Government employee | 28 | 5.8 |
Other | 35 | 7.3 |
Partners occupation | Farmer | 294 | 61.4 |
Merchant | 63 | 13.2 |
Private | 48 | 10 |
Government | 60 | 12.5 |
Other | 14 | 2.9 |
Monthly Income (ETB) | 500-1000 | 47 | 9.8 |
1001-2000 | 100 | 20.9 |
2001-3000 | 159 | 33.2 |
Above 3000 | 173 | 36.1 |
3.2. Behavior Related Characteristics
About 397 (82.9%) of the study participants had one sexual partner in lifetime and 82 (17.1%) had multiple sexual partners in lifetime. Fifty-two (10.9%) respondent had history of alcohol drinking and 13 (2.7%) respondents had history of cigarettes smoking.
Table 2. Behavior related characteristics of study participants in Hawassa zuria woreda public health facilities, Sidama, Ethiopia, 2024.
Variable | Category | Frequency | Percent |
Lifetime sexual partners | Multiple | 82 | 17.1 |
One | 397 | 82.9 |
Last 12 month sexual partners | Multiple | 34 | 7.1 |
One | 445 | 92.9 |
Alcohol drinking | Yes | 52 | 10.9 |
No | 427 | 89.1 |
Cigarette smoking | Yes | 13 | 2.7 |
No | 466 | 97.3 |
3.3. Knowledge Related Characteristics
Among 479 study participants, 261 (54.5%), 252 (52.2%), 156 (32.6%), and 92 (19.2%) of the study participants got information about STIs from School, Health facilities, Media, and peers/families respectively. About 291 (60.7%) of study participants had awareness about the STI transmission and while 362 (75.6%) did not know symptoms of STI. Nearly one-third of 150 (31.3%) study participants knew the common types of STI. Approximately half 239 (49.9%), study participants had awareness about the prevention of mother-to-child transmission. About 334 (69.7%) of the participants know that STIs could be prevented through the use of a condom. About 164 (34.2%) of study participants had good knowledge about STI.
3.4. Obstetric Characteristics of Study Participants
Majority 321 (67%) of the study participants were multigravida and 356 (74.3%) were screened for syphilis in the first trimester. About 265 (55.3%) of the study participants started ANC visit during first trimester and 165 (34.4%) of the study participants had first ANC visit. About 53 (11.1%) of participants reported a history of abortion.
Table 3. Obstetric characteristics of study participants in Hawassa zuria woreda public health facilities, Sidama, Ethiopia, 2024.
Variable | Category | Frequency | Percent |
Pregnancy | Nulliparous | 158 | 33 |
Multigravida | 321 | 67 |
Syphilis test time | First trimester | 356 | 74.3 |
Second trimester | 81 | 17 |
Third trimester | 42 | 8.7 |
First ANC visit | First trimester | 265 | 55.3 |
Second trimester | 159 | 33.2 |
Third trimester | 55 | 11.5 |
Number of ANC visit | First | 165 | 34.4 |
Second | 134 | 27.9 |
Third | 104 | 21.7 |
Fourth and above | 76 | 15.8 |
History of Abortion | Yes | 53 | 11.1 |
No | 426 | 88.9 |
3.5. Medical Characteristics of Study Participants
About 19 (4%) of the study participants had history previously and 11 (2.3%) of the study participants were reactive for HIV. About 16 (84.2%) of the study participants diagnosed for STI before one year.
3.6. Factors Associated with Syphilis Infection
The seroprevalence of syphilis determined using the VDRL test was 3.8% (95% CI: 3.61 - 3.99%). In the binary logistic regression analysis, variables such as; Age, HIV positive, multiple sexual partners and drinking alcohol were candidate variables for multivariable logistic regression analysis. In the multivariate logistic regression analysis, after controlling for possible cofounders, pregnant mothers who had multiple sexual partners, alcohol consumption and HIV positive were significantly associated with syphilis infection.
This study indicated that pregnant mothers with multiple sexual partners were almost four times more likely to have syphilis infection than their counterparts (AOR=3.68, 95%CI: 1.22 - 11.11). Pregnant women who were HIV positive were ten times more likely to have syphilis infection than those who were HIV negative (AOR =10.22, 95%CI: 2.03 - 51.53). The finding also showed that pregnant women who were alcohol users had significantly higher odds of being seropositive for syphilis than women those who were not alcohol drinking (AOR= 7.34, 95%CI: 2.31 - 23.36).
Table 4. Medical history related characteristics of study participants in Hawassa zuria woreda public health facilities, Sidama, Ethiopia, 2024.
Variable | Category | Frequency | Percent |
History of STI | Yes | 19 | 4 |
No | 460 | 96 |
Year of diagnosis | Last 12 months | 3 | 15.8 |
Before one year | 16 | 84.2 |
Treatment | Oral | 7 | 36.8 |
Injection | 12 | 63.2 |
HIV Sero-status | Reactive | 11 | 2.3 |
Non-reactive | 468 | 97.7 |
Syphilis | Reactive | 18 | 3.8 |
Non-reactive | 461 | 96.2 |
Table 5. Factors associated with seroprevalence of syphilis among of study participants in Hawassa zuria woreda public health facilities, Sidama, Ethiopia, 2024.
Variables | Category | Syphilis | COR (95%CI) | AOR (95%CI) |
R | NR |
Age | <25 | 4 | 197 | 1 | 1 |
25-29 | 5 | 151 | 1.63 (0.43 - 6.18) | 2.00 (0.49 - 8.13) |
30-42 | 9 | 113 | 3.92 (1.18 - 13.03) | 3.03 (0.82 - 11.17) |
Alcohol drinking | Yes | 7 | 45 | 5.88 (2.17 - 15.93) | 7.34 (2.31 - 23.36) * |
No | 11 | 416 | 1 | 1 |
Number of sexual partner | One | 9 | 388 | 1 | 1 |
Multiple | 9 | 73 | 5.32 (2.04 - 13.84) | 3.68 (1.22 - 11.11) * |
HIV Status | Reactive | 4 | 7 | 18.53 (4.86 - 70.67) | 10.22 (2.03 - 51.53)* |
Non-reactive | 14 | 454 | 1 | 1 |
NB: (* Statistically significant variable at p-value < 0.05 in multivariable analysis).
4. Discussion
This study aimed to assess the seroprevalence of syphilis and its associated factors among pregnant women attending ANC in Public health facilities in Hawassa Zuria Woreda, Sidama, Ethiopia. The overall seroprevalence of syphilis among pregnant women attending antenatal care was 3.8% (95% CI, 3.61-3.99). This finding was comparable with those of studies conducted in Northwest Gonder 3.7%
| [21] | Yideg YG. and A. BA., Prevalence of Syphilis among Pregnant Women Attending Antenatal Care Clinic, Sede Muja District, South Gondar, Northwest Ethiopia.. Journal of pregnancy., 2019. |
[21]
and South Africa 3.4%
| [35] | Hussen S. and T. BT., Prevalence of Syphilis among Pregnant Women in Sub-Saharan Africa: A Systematic Review and Meta-Analysis. BioMed Research International, 2019. |
[35]
. However, the findings of this study were lower than those in Southern Ethiopia 4.8%
| [20] | Enbiale M., et al., Magnitude of syphilis serostatus and associated factors among pregnant women attending antenatal care in jinka town public health facilities, Southern Ethiopia. PLOS ONE, 2021. 16(9): p. 1-12. |
[20]
, Zambia 9.3%
| [36] | Sakala J., Chizuni N., and N. S., A study on usefulness of a set of known risk factors in predicting maternal syphilis infections in three districts of Western Province, Zambia. Pan African Medical Journal, 2016. 24(1). |
[36]
, and Yirgalem-Ethiopia 5.1%
| [37] | Amsalu A., Ferede G., and A. D., High seroprevalence of syphilis infection among pregnant women in Yiregalem hospital southern Ethiopia.. BMC infectious diseases, 2018. 18(1): p. 109. |
[37]
. This finding is higher than the study conducted in Sub-Saharan Africa 2.3%
| [35] | Hussen S. and T. BT., Prevalence of Syphilis among Pregnant Women in Sub-Saharan Africa: A Systematic Review and Meta-Analysis. BioMed Research International, 2019. |
[35]
, Nigeria 1.98%
| [38] | Opone C, et al., The prevalence of syphilis in pregnant women in Akwa Ibom State, Southern Nigeria. Tropical Journal of Obstetrics and Gynaecology, 2019. 36(2): p. 224-31. |
[38]
, Bahirdar Ethiopia 2.6%
| [39] | Tareke K., Munshea A., and N. E., Seroprevalence of syphilis and its risk factors among pregnant women attending antenatal care at Felege Hiwot Referral Hospital, Bahir Dar, northwest Ethiopia: a cross-sectional study. BMC research notes, 2019. 12(1): p. 69. |
[39]
and Yaya Gulele, Oromia Ethiopia 2.6%
| [40] | Negashu D, et al., Syphlis and associated factors among pregnant women attending ANC at Yaya Gulele district public helath facility Oromia, Ethiopia. HAJHBS, 2024. 1(1): p. 31-37. |
[40]
, and systemic review and meta-analysis, Ethiopia 2.3%
| [41] | Geremew H and G. D., Sero prevalence of syphlis and associated factors among pregnant women in Ethiopia. systematic review and meta analysis. BMC, 2021. 10(223). |
[41]
. The difference in the magnitude of syphilis may be due to variations in the laboratory diagnostic techniques used. Moreover, a possible reason for the difference in the seroprevalence of syphilis might be the difference in sociodemographic characteristics, study period, sexual practice, and cultural differences across the study population.
Pregnant women with multiple sexual partners were four times more likely to have syphilis infection than their counterparts. This finding is consistent with studies conducted in Zambia
| [36] | Sakala J., Chizuni N., and N. S., A study on usefulness of a set of known risk factors in predicting maternal syphilis infections in three districts of Western Province, Zambia. Pan African Medical Journal, 2016. 24(1). |
[36]
, Bahir Dar, Ethiopia
| [39] | Tareke K., Munshea A., and N. E., Seroprevalence of syphilis and its risk factors among pregnant women attending antenatal care at Felege Hiwot Referral Hospital, Bahir Dar, northwest Ethiopia: a cross-sectional study. BMC research notes, 2019. 12(1): p. 69. |
[39]
, Southwest Shoa, Ethiopia
| [42] | Chuko BM, et al., Deteminats of syphlis among pregnant women attending ANC at public hospital in south west shoa, Ethiopia 2023. j women health and gynecology, 2024. 4(2). |
[42]
, and Southern Ethiopia
| [20] | Enbiale M., et al., Magnitude of syphilis serostatus and associated factors among pregnant women attending antenatal care in jinka town public health facilities, Southern Ethiopia. PLOS ONE, 2021. 16(9): p. 1-12. |
[20]
, Shashemene town, Southern Ethiopia
| [43] | Beriso JA., et al., High seroprevalence of syphilis infection among pregnant women in Public Health facilities in Shashemene town, southern Ethiopia. Clinical Epidemiology and Global Health, 2023. 21. |
[43]
. A possible reason might be that having multiple sexual partners increases vulnerability to STIs owing to unsafe sexual practices and low level awareness of STI transmission and prevention methods.
This study showed that pregnant women who had a history of alcohol drinking were found to be about seven time’s higher likelihood of getting syphilis infec tion compared to their counterparts. This finding was supported by studies conducted in Southwest Shoa, Ethiopia
| [42] | Chuko BM, et al., Deteminats of syphlis among pregnant women attending ANC at public hospital in south west shoa, Ethiopia 2023. j women health and gynecology, 2024. 4(2). |
[42]
, and Southern Ethiopia
| [20] | Enbiale M., et al., Magnitude of syphilis serostatus and associated factors among pregnant women attending antenatal care in jinka town public health facilities, Southern Ethiopia. PLOS ONE, 2021. 16(9): p. 1-12. |
[20]
. This might be explained by alcohol intake exposing women to unsafe sexual practices, including concomitant multiple sexual partnerships that predispose them to the acquisition of STIs including syphilis.
Furthermore, HIV positive pregnant women were ten times more likely to be infected with syphilis than women who are HIV negative women. This finding is consistent with those of studies conducted in Ethiopia
| [41] | Geremew H and G. D., Sero prevalence of syphlis and associated factors among pregnant women in Ethiopia. systematic review and meta analysis. BMC, 2021. 10(223). |
[41]
, Zambia
| [36] | Sakala J., Chizuni N., and N. S., A study on usefulness of a set of known risk factors in predicting maternal syphilis infections in three districts of Western Province, Zambia. Pan African Medical Journal, 2016. 24(1). |
[36]
, and Uganda
| [44] | Simiyu A., et al., Sero-prevalence of syphilis and associated risk factors among pregnant women attending antenatal care at an urban-poor health centre in Kampala, Uganda: a cross-sectional study. Pan African Medical Journal, 2024. 47(129). |
[44]
.
Limitations of the Study
The use of VDRL tests for syphilis screening may be underestimates the results of the study because it has low sensitivity and specificity. History of sexual habits reported by respondents may have been underestimated or overestimated because of recall bias and cultural taboos. Facility-based design limits the generalizability to the broader community.
5. Conclusion
This study showed that the magnitude of syphilis infection among pregnant mothers attending ANC at the Hawassa Zuria Woreda public health facilities was 3.8%, which is higher than the national prevalence of Syphilis 2.32%. It highlights the importance of routine syphilis screening in ANC to prevent adverse outcomes. This study finding indicates that multiple sexual partners, HIV status, and alcohol consumption were significantly associated with syphilis infection. Healthcare workers should provide regular comprehensive health education for pregnant women at ANC clinics on the avoidance of risky sexual behaviors, the impact of syphilis on the pregnancy and awareness of the transmission and prevention mechanisms of syphilis. Appropriate strategies should be planned for the prevention and control of maternal syphilis.
Abbreviations
ANC | Antenatal Care |
CI | Confidence Interval |
CS | Congenital Syphilis |
DC | Data Collectors |
IRERC | Institutional Research Ethical Review Committee |
MTCT | Prevention of Mother to Child Transmission |
PI | Principal Investigator |
RPR | Rapid Plasma Reagin |
SPSS | Statistical Package for Social Sciences |
SSA | Sub-Saharan Africa |
STI | Sexually Transmitted Infection |
SDG | Sustainable Development Goal |
VDRL | Venereal Disease Research Laboratory |
WHO | World Health Organization |
Author Contributions
Akililu Aliye: Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Supervision, Validation, Visualization, Writing - original draft, Writing - review & editing.
Solomon Tesfaye Doelaso: Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Software, Supervision, Validation, Visualization, Writing - original draft, Writing - review & editing.
Amanuel Samuel: Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Supervision, Validation, Visualization, Writing - original draft.
Conflicts of Interest
The authors declare no conflicts of interest.
References
| [1] |
WHO., Guideline on syphilis screening and treatment for pregnant women: World Health Organization. 2017.
|
| [2] |
Kojima N. and K. JD., An Update on the Global Epidemiology of Syphilis. Curr Epidemiol Rep, 2018. 5: p. 24-38.
|
| [3] |
Lendado TA., et al., Determinants of syphilis infection among pregnant women attending antenatal care in hospitals of Wolaita zone, Southern Ethiopia, 2020. PLOS ONE, 2022. 17(6).
|
| [4] |
Khan S., Menezes GA., and D. R., Seroprevalence of syphilis in patients attending a tertiary care hospital in Southern India. Asian Pac J Trop Biomed 2014. 4: p. 995-7.
|
| [5] |
WHO., The global elimination of congenital syphilis: rationale and strategy for action. 2007, World Health Organization: Geneva.
|
| [6] |
WHO., Global Incidence and Prevalence of Selected Curable Sexually Transmitted Infections. 2012.
|
| [7] |
Cooper JM. and Sánchez PJ, Congenital syphilis. Seminars in perinatology. Elsevier, 2018.
|
| [8] |
Clement ME., Okeke NL., and H. CB., Treatment of syphilis: a systematic review.. JAMA, 2017. 312: p. 1905-17.
|
| [9] |
Dodds F., Donoghue AD., and R. JL., Negotiating the sustainable development goals: a transformational agenda for an insecure world. Taylor & Francis, 2016.
|
| [10] |
Hoque M., et al., Prevalence, incidence and seroconversion of HIV and Syphilis infections among pregnant women of South Africa.. Southern African Journal of Infectious Diseases, 2021. 36(1): p. 296.
|
| [11] |
Korenromp EL., et al., Global burden of maternal and congenital syphilis and associated adverse birth outcomes. Estimates for 2016 and progress since 2012.. PloS one, 2019. 14(2).
|
| [12] |
Befekadu B., Shuremu M., and Z. A., Seroprevalence of syphilis and its predictors among pregnant women in Buno Bedele zone, southwest Ethiopia: A community-based cross-sectional study.. BMJ Open, 2022. 12(8).
|
| [13] |
WHO., Report on global sexually transmitted infection surveillance. 2018, World Health Organization.
|
| [14] |
Isa M., et al., Prevalence of syphilis among pregnant women attending state specialist hospital Maiduguri, borno, Nigeria. Int J Res., 2014. 1(11): p. 523-530.
|
| [15] |
Abdelmola AO., Prevalence and factors associated with syphilis among pregnant women attending antenatal care, Khartoum State, Sudan.. Int J Adv Med., 2018. 5(2): p. 2-6.
|
| [16] |
Mutagoma M., et al., The prevalence of syphilis infection and its associated factors in the general population of Rwanda: a national household-based survey. J Sexually Transmit Dis., 2016. 7(3).
|
| [17] |
EPHI., Report on the 2014 Round Antenatal Care based Sentinel HIV Surveillance in Ethiopia.. 2015, The Ethiopia public health institution.
|
| [18] |
Zinabie S., Belachew E., and Y. T., Sero-Prevalence of Syphilis and HIV and Associated Factors in Pregnant Women Attending Antenatal Care Clinics in Debre Berhan Public Health Institutions, Ethiopia. AJBLS, 2018. 6: p. 56.
|
| [19] |
Schönfeld A., Feldt T., and T. TB., Prevalence and impact of sexually transmitted infections in pregnant women in central Ethiopia.. Int J STD AIDS, 2018. 29: p. 251-8.
|
| [20] |
Enbiale M., et al., Magnitude of syphilis serostatus and associated factors among pregnant women attending antenatal care in jinka town public health facilities, Southern Ethiopia. PLOS ONE, 2021. 16(9): p. 1-12.
|
| [21] |
Yideg YG. and A. BA., Prevalence of Syphilis among Pregnant Women Attending Antenatal Care Clinic, Sede Muja District, South Gondar, Northwest Ethiopia.. Journal of pregnancy., 2019.
|
| [22] |
Lynn WA. and L. S., Syphilis and HIV: a dangerous combination.. Lancet Infect Dis., 2004 4(7): p. 456-66.
|
| [23] |
Marra CM., et al., Cerebrospinal fluid abnormalities in patients with syphilis: association with clinical and laboratory features.. J Infect Dis., 2004. 189(3): p. 369-76.
|
| [24] |
Ng BE., et al., Population-based biomedical sexually transmitted infection control interventions for reducing HIV infection.. Cochrane Database Syst Rev, 2011 16(3).
|
| [25] |
Melku M., Kebede A., and A. Z., Magnitude of HIV and syphilis seroprevalence among pregnant women in gondar, northwest ethiopia: a cross-sectional study. HIV/AIDS, 2015. 7: p. 175.
|
| [26] |
Endris M DT, Belyhun Y, and M. F., Seroprevalence of syphilis and human immunodeficiency virus infections among pregnant women who attend the University of Gondar teaching hospital, Northwest Ethiopia: a cross sectional study.. BMC Infect Dis., 2015. 15(1): p. 111.
|
| [27] |
Tsimis ME. and S. JS., Update on syphilis and pregnancy.. Birth Defects Research, 2017. 109(5): p. 347-352.
|
| [28] |
WHO., Global health sector strategy on sexually transmitted infections 2016-2021: toward ending STIs.. 2016.
|
| [29] |
Newman L., et al., Global Estimates of the Prevalence and Incidence of Four Curable Sexually Transmitted Infections in 2015 Based on Systematic Review and Global Reporting.. PLoS One, 2017. 10(12).
|
| [30] |
Wijesooriya NS., et al., Global burden of maternal and congenital syphilis in 2008 and 2012: a health systems modelling study. The Lancet Global health., 2016. 4(8): p. 525-533.
|
| [31] |
Curry SJ., et al., Screening for syphilis infection in pregnant women: US Preventive Services Task Force reaffirmation recommendation statement. jama, 2018. 320(9): p. 911-917.
|
| [32] |
Blencowe H., et al., Lives Saved Tool supplement detection and treatment of syphilis in pregnancy to reduce syphilis related stillbirths and neonatal mortality. BMC public health., 2011. 11(3): p. 9.
|
| [33] |
CSA., Ethiopian Demographic and Health Survey report. 2016, The Central Statistical Agency.
|
| [34] |
Balla E. and D. GG., Features of syphilis seropositive pregnant women raising alarms in Hungary, 2013-2016.. European Journal of Obstetrics & Gynecology and Reproductive Biology., 2018. 228: p. 274-8.
|
| [35] |
Hussen S. and T. BT., Prevalence of Syphilis among Pregnant Women in Sub-Saharan Africa: A Systematic Review and Meta-Analysis. BioMed Research International, 2019.
|
| [36] |
Sakala J., Chizuni N., and N. S., A study on usefulness of a set of known risk factors in predicting maternal syphilis infections in three districts of Western Province, Zambia. Pan African Medical Journal, 2016. 24(1).
|
| [37] |
Amsalu A., Ferede G., and A. D., High seroprevalence of syphilis infection among pregnant women in Yiregalem hospital southern Ethiopia.. BMC infectious diseases, 2018. 18(1): p. 109.
|
| [38] |
Opone C, et al., The prevalence of syphilis in pregnant women in Akwa Ibom State, Southern Nigeria. Tropical Journal of Obstetrics and Gynaecology, 2019. 36(2): p. 224-31.
|
| [39] |
Tareke K., Munshea A., and N. E., Seroprevalence of syphilis and its risk factors among pregnant women attending antenatal care at Felege Hiwot Referral Hospital, Bahir Dar, northwest Ethiopia: a cross-sectional study. BMC research notes, 2019. 12(1): p. 69.
|
| [40] |
Negashu D, et al., Syphlis and associated factors among pregnant women attending ANC at Yaya Gulele district public helath facility Oromia, Ethiopia. HAJHBS, 2024. 1(1): p. 31-37.
|
| [41] |
Geremew H and G. D., Sero prevalence of syphlis and associated factors among pregnant women in Ethiopia. systematic review and meta analysis. BMC, 2021. 10(223).
|
| [42] |
Chuko BM, et al., Deteminats of syphlis among pregnant women attending ANC at public hospital in south west shoa, Ethiopia 2023. j women health and gynecology, 2024. 4(2).
|
| [43] |
Beriso JA., et al., High seroprevalence of syphilis infection among pregnant women in Public Health facilities in Shashemene town, southern Ethiopia. Clinical Epidemiology and Global Health, 2023. 21.
|
| [44] |
Simiyu A., et al., Sero-prevalence of syphilis and associated risk factors among pregnant women attending antenatal care at an urban-poor health centre in Kampala, Uganda: a cross-sectional study. Pan African Medical Journal, 2024. 47(129).
|
Cite This Article
-
APA Style
Aliye, A., Doelaso, S. T., Samuel, A. (2025). Seroprevalence of Syphilis and Associated Factors Among Pregnant Women Attending Antenatal Care at Hawassa Zuria Woreda Public Health Facilities, Sidama, Ethiopia, 2024. European Journal of Preventive Medicine, 13(4), 70-78. https://doi.org/10.11648/j.ejpm.20251304.11
Copy
|
Download
ACS Style
Aliye, A.; Doelaso, S. T.; Samuel, A. Seroprevalence of Syphilis and Associated Factors Among Pregnant Women Attending Antenatal Care at Hawassa Zuria Woreda Public Health Facilities, Sidama, Ethiopia, 2024. Eur. J. Prev. Med. 2025, 13(4), 70-78. doi: 10.11648/j.ejpm.20251304.11
Copy
|
Download
AMA Style
Aliye A, Doelaso ST, Samuel A. Seroprevalence of Syphilis and Associated Factors Among Pregnant Women Attending Antenatal Care at Hawassa Zuria Woreda Public Health Facilities, Sidama, Ethiopia, 2024. Eur J Prev Med. 2025;13(4):70-78. doi: 10.11648/j.ejpm.20251304.11
Copy
|
Download
-
@article{10.11648/j.ejpm.20251304.11,
author = {Akililu Aliye and Solomon Tesfaye Doelaso and Amanuel Samuel},
title = {Seroprevalence of Syphilis and Associated Factors Among Pregnant Women Attending Antenatal Care at Hawassa Zuria Woreda Public Health Facilities, Sidama, Ethiopia, 2024
},
journal = {European Journal of Preventive Medicine},
volume = {13},
number = {4},
pages = {70-78},
doi = {10.11648/j.ejpm.20251304.11},
url = {https://doi.org/10.11648/j.ejpm.20251304.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ejpm.20251304.11},
abstract = {Introduction: Syphilis is a sexually transmitted infection caused by the bacterium Treponema pallidum, and it continues to be a major public health problem worldwide. It can spread through various means, such as unprotected sex, mother to fetus, and blood transfusion. This study aimed to assess the seroprevalence of syphilis and associated factors among pregnant women attending antenatal care at public health facilities in Hawassa zuria woreda, Sidama, Ethiopia. Methods: A facility-based cross-sectional study design was conducted in Hawassa Zuria public health facilities from November 1-30, 2024. A total of 482 study participants were selected using systematic sampling techniques. Data were collected through structured interviews using a pretested questionnaire and reviewing records. Epi-data version 4.4 was used to code and enter the data, and SPSS version 26 was used for analysis. Bivariable logistic regression was employed to identify candidate variables for multivariable logistic regression with a significance level of ≤ 0.25. A multivariate logistic regression model was used to investigate factors associated with syphilis infection, p-value of Result: The seroprevalence of syphilis among pregnant women attending ANC clinics was 3.8% (95% CI: 3.61-3.99). Having multiple sexual partners (AOR = 3.68; 95% CI: 1.22 - 11.11), alcohol use (AOR =7.34; 95% CI: 2.31 - 23.36), and HIV positive women (AOR =10.22; 95% CI: 2.03 - 51.53) were significantly associated with syphilis infection. Conclusion and recommendation: Seroprevalence of syphilis was high. Having multiple sexual partners, HIV-positive women, and alcohol drinking were factors significantly associated with syphilis. Therefore, substantial efforts have to be made to provide regular health education for pregnant women at the antenatal clinic on the avoidance of risky behaviors, raise awareness on the transmission and prevention mechanisms of syphilis, promote safe sexual practices, and strengthen partner testing and treatment.
},
year = {2025}
}
Copy
|
Download
-
TY - JOUR
T1 - Seroprevalence of Syphilis and Associated Factors Among Pregnant Women Attending Antenatal Care at Hawassa Zuria Woreda Public Health Facilities, Sidama, Ethiopia, 2024
AU - Akililu Aliye
AU - Solomon Tesfaye Doelaso
AU - Amanuel Samuel
Y1 - 2025/09/08
PY - 2025
N1 - https://doi.org/10.11648/j.ejpm.20251304.11
DO - 10.11648/j.ejpm.20251304.11
T2 - European Journal of Preventive Medicine
JF - European Journal of Preventive Medicine
JO - European Journal of Preventive Medicine
SP - 70
EP - 78
PB - Science Publishing Group
SN - 2330-8230
UR - https://doi.org/10.11648/j.ejpm.20251304.11
AB - Introduction: Syphilis is a sexually transmitted infection caused by the bacterium Treponema pallidum, and it continues to be a major public health problem worldwide. It can spread through various means, such as unprotected sex, mother to fetus, and blood transfusion. This study aimed to assess the seroprevalence of syphilis and associated factors among pregnant women attending antenatal care at public health facilities in Hawassa zuria woreda, Sidama, Ethiopia. Methods: A facility-based cross-sectional study design was conducted in Hawassa Zuria public health facilities from November 1-30, 2024. A total of 482 study participants were selected using systematic sampling techniques. Data were collected through structured interviews using a pretested questionnaire and reviewing records. Epi-data version 4.4 was used to code and enter the data, and SPSS version 26 was used for analysis. Bivariable logistic regression was employed to identify candidate variables for multivariable logistic regression with a significance level of ≤ 0.25. A multivariate logistic regression model was used to investigate factors associated with syphilis infection, p-value of Result: The seroprevalence of syphilis among pregnant women attending ANC clinics was 3.8% (95% CI: 3.61-3.99). Having multiple sexual partners (AOR = 3.68; 95% CI: 1.22 - 11.11), alcohol use (AOR =7.34; 95% CI: 2.31 - 23.36), and HIV positive women (AOR =10.22; 95% CI: 2.03 - 51.53) were significantly associated with syphilis infection. Conclusion and recommendation: Seroprevalence of syphilis was high. Having multiple sexual partners, HIV-positive women, and alcohol drinking were factors significantly associated with syphilis. Therefore, substantial efforts have to be made to provide regular health education for pregnant women at the antenatal clinic on the avoidance of risky behaviors, raise awareness on the transmission and prevention mechanisms of syphilis, promote safe sexual practices, and strengthen partner testing and treatment.
VL - 13
IS - 4
ER -
Copy
|
Download