Sexually transmitted diseases in South Africa

Investigating causes of the high prevalence of sexually transmitted infections in Du Noon

BACKGROUND

 In South Africa, sexually transmitted infections (STIs) represent a significant public health issue. Sexually transmitted infections contribute significantly to the burden of disease in South Africa and are recognised as one of the main causes of the human immunodeficiency virus (HIV) epidemic. The aim of this study was to investigate the potential causes of the high prevalence of STIs in the Du Noon population.

METHODS

 A mixed methodology study involving 40 participants between the ages of 18 years and 45 years was conducted at Du Noon community health centre from 01 May 2021 to 15 May 2021. Both structured questionnaires and one-on-one patient interviews with open-ended questions were utilised to collect data.

RESULTS

 Cultural beliefs, having multiple partners, a lack of partner notification, alcohol consumption, and a lack of condom usage were found to be the main contributing factors to the high incidence of STIs. Sex education appears to be lacking. Our findings reflected the other well-known cultural and socioeconomic issues confronting South African communities, for example, poverty, age-disparate relationships, and polygamous relationships.

CONCLUSION

 The cultural perspectives and understandings of sexual interactions of older men appear to have an impact on younger generations; as do peer pressure, social media and other socio-economic factors. There is an urgent need to shift cultural ideologies and norms among the youth. More research is needed to understand the views and misconceptions of the general public about STIs.Contribution: This study highlighted how health education challenges, interpersonal relationships, and socioeconomic barriers are still important factors in STI transmission.

The impact of COVID-19 lockdown on cases and deaths of AIDS, gonorrhea, syphilis, hepatitis B, and hepatitis C in China: an interrupted time series analysis

BACKGROUND

China has implemented nationwide lockdown to contain COVID-19 from an early stage. Previous studies of the impact of COVID-19 on sexually transmitted diseases (STDs) and diseases caused by blood-borne viruses (BBVs) in China have yielded widely disparate results, and study on deaths attributable to STDs and BBVs are scarce.

OBJECTIVE

We aimed to elucidate the impact of COVID-19 lockdown on the cases, deaths, and case-fatality ratios of STDs and BBVs.

METHODS

We extracted the monthly cases and deaths data for AIDS, gonorrhea, syphilis, hepatitis B, and hepatitis C between January 2015 and December 2021 from the notifiable disease reporting database on the official website of the National Health Commission of China. We used descriptive statistics to summarize the number of cases and deaths, and calculated incidence and case-fatality ratios before and after implementing nationwide lockdown (January 2020). We used negative binominal segmented regression models to estimate the immediate and long-term impacts of lockdown on cases, deaths, and case-fatality ratios in January 2020 and December 2021, respectively.

RESULTS

A total of 14,800,330 cases and 127,030 deaths of AIDS, gonorrhea, syphilis, hepatitis B, and hepatitis C were reported from January 2015 to December 2021, with an incidence of 149.11/100,000 before lockdown and 151.41/100,000 after lockdown , and a case-fatality ratio of 8.21/1000 before lockdown and 9.50/1000 after lockdown . In the negative binominal model, AIDS cases (-23.4%; 0.766, 0.626-0.939) and deaths (-23.9%; 0.761, 0.647-0.896), gonorrhea cases (-34.3%; 0.657, 0.524-0.823), syphilis cases (-15.4%; 0.846, 0.763-0.937), hepatitis B cases (-17.5%; 0.825, 0.726-0.937) and hepatitis C cases (-19.6%; 0.804, 0.693-0.933) showed significant decreases in January 2020. Gonorrhea, syphilis and hepatitis C showed small increases in the number of deaths or case-fatality ratios in January 2020. By December 2021, the cases, deaths, and case-fatality ratios for each disease had either reached or remained below expected levels.

CONCLUSIONS

COVID-19 lockdown may have contributed to fewer reported cases of AIDS, gonorrhea, syphilis, hepatitis B, and hepatitis C, and more reported deaths or case-fatality ratios of gonorrhea, syphilis and hepatitis C in China.

CLINICALTRIAL

An Inventory of South African Medicinal Plants Used in the Management of Sexually Transmitted and Related Opportunistic Infections: An Appraisal and Some Scientific Evidence (1990-2020)

The current work is aimed at generating the first inventory of South African medicinal plants used in the treatment of sexually transmitted and related opportunistic infections associated with HIV-AIDS. This is important in assisting researchers to access a list of plant species to evaluate for potential phytocompounds, as this area of research is greatly lagging in South Africa. A total of 335 medicinal plants from 103 families have been documented in the current work. The most represented families are Fabaceae (11.64%) and Asteraceae (6.27%). Herbs constitute 36.53%, trees 32.34%, shrubs 29.04%, climbers 1.80% and parasites 0.30%. It is worrying that on the plant parts used, the roots constitute 47.18%, while leaves and stem bark yield 16.62 and 15.01%, respectively. Catharanthus roseus exhibited the highest number of citations (19), while Peltophorum africanum had 14 and both Carica papaya and Vachelia karoo had 12. In the mode of administration of the reported medicinal plant species, most of the plants are boiled and taken orally (48.22%), while other plant species are used as mouth washes (3.25%). Although there is reasonable in vitro activity of some of the plant species, validating the relevance of use, there is still a need to explore the mode of action of such plant species; isolated compounds and possible derivatives thereof are of paramount importance and need to be explored as well. Furthermore, toxicological aspects of such plant species need to be explored.

Travel and sexually transmitted infections

Increasing population mobility and increasing frequency and variety of sexually transmitted infections (STI) are closely linked around the globe. Although all mobile populations are at increased risk for acquiring STIs, international travelers are the focus of this review. Several aspects of travel such as opportunity, isolation, and the desire for unique experiences all enhance the likelihood of casual sexual experiences while abroad. The situational loss of inhibition of travel can be markedly enhanced by alcohol and drugs. Several of the most important elements of the complex interaction between travel and STIs are discussed.

Integration of sexual and reproductive health services in KwaZulu-Natal, South Africa

An integrated sexual and reproductive health package is widely regarded as essential for meeting the needs of both men and women. The practical realities of integration in KwaZulu-Natal, South Africa, were examined from the perspective of both providers and clients. Only minorities of clients received any assessment of reproductive and sexual health needs over and above their main presenting need or problem. The majority would have welcomed such assessments and many were classified as being in need, particularly for advice and services with regard to sexually transmitted infections, including HIV. Most providers were positive about integration, but their ability to practice an active form of integration was limited by inadequate training and time constraints. While training defects can be remedied, the time constraints posed by heavy patient loads are less tractable. More skillful use of booking clerks or the introduction of lay counsellors are also possible solutions.

Sentinel surveillance of sexually transmitted infections in South Africa: a review

OBJECTIVES

To review studies of sexually transmitted infection (STI) prevalence in South Africa between 1985 and 2003 in selected sentinel populations. To examine how STI prevalence varies between populations and to identify the limitations of the existing data.

METHODS

Studies of the prevalence of syphilis, chancroid, granuloma inguinale, lymphogranuloma venereum, gonorrhoea, chlamydia, trichomoniasis, bacterial vaginosis, candidiasis, and herpes simplex virus type 2 (HSV-2) were considered. Results were included if they related to women attending antenatal clinics or family planning clinics, commercial sex workers, individuals in the general population (household surveys), patients with STIs, patients with genital ulcer disease (GUD), or men with urethritis.

RESULTS

High STI prevalence rates have been measured, particularly in the case of HSV-2, trichomoniasis, bacterial vaginosis and candidiasis. The aetiological profile of GUD appears to be changing, with more GUD caused by HSV-2 and less caused by chancroid. The prevalence of gonorrhoea and syphilis is highest in "high risk" groups such as sex workers and attenders of STI clinics, but chlamydia and trichomoniasis prevalence levels are not significantly higher in these groups than in women attending antenatal clinics.

CONCLUSIONS

The prevalence of STIs in South Africa is high, although there is extensive variability between regions. There is a need for STI prevalence data that are more nationally representative and that can be used to monitor prevalence trends more reliably.

Neurosyphilis in the modern era

OBJECTIVE

To review the nature of the presentation of neurosyphilis, the value of diagnostic tests, and the classification of the disease.

METHODS

A retrospective review was carried out of the records of patients who had been identified as possible cases of neurosyphilis by a positive FTA-abs test in the CSF. The review extended over 10 years at a single hospital which served a population of mixed ancestry in a defined catchment area in the Western Cape province of South Africa. Patients were placed in predefined diagnostic categories, and clinical, radiological, and laboratory features were assessed.

RESULTS

161 patients met diagnostic criteria for neurosyphilis: 82 presented with combinations of delirium and dementia and other neuropsychiatric conditions, and the remainder had typical presentations such as stroke (24), spinal cord disease (15), and seizures (14). The average age of presentation ranged from 35.9 to 42.6 years in the different categories of neurosyphilis. Of those followed up, 77% had residual deficits from their initial illness. Cerebrospinal fluid (CSF) VDRL was positive in 73% of cases.

CONCLUSIONS

The diagnosis of neurosyphilis can be made with reasonable certainty if there is an appropriate neuropsychiatric syndrome associated with a positive CSF VDRL. If the VDRL is negative, a positive FTA-abs in an appropriate clinical setting, associated with raised CSF cell count, protein, or IgG index, is a useful method of identifying neurosyphilis. Tabes dorsalis has become uncommon, but this is likely to be the only manifestation of neurosyphilis that has been altered during the antibiotic era.

Increasing relative prevalence of HSV-2 infection among men with genital ulcers from a mining community in South Africa

OBJECTIVES

To determine the aetiology of genital ulcer disease (GUD) and its association with HIV infection in the mining community of Carletonville, South Africa, from two cross sectional surveys of consecutive men presenting with genital lesions during October 1993 to January 1994 and July to November 1998.

METHODS

A multiplex polymerase chain reaction (M-PCR) assay combined with amplicon detection was used to identify DNA specific sequences of Treponema pallidum, herpes simplex virus (HSV), and Haemophilus ducreyi. A real time PCR assay was used to differentiate between HSV-1 and HSV-2.

RESULTS

M-PCR detected T pallidum, HSV, and H ducreyi in 10.3%, 17.2%, and 69.4% of 232 GUD patients during 1993-4 and in 12.4%, 36.0%, and 50.5% of 186 GUD patients in 1998. The proportion of patients with more than one agent increased significantly from 7.3% (17/232) in 1993-4 to 16.7% (31/186) in 1998 (p <0.01). HSV-2 was detected in a higher proportion of ulcer specimens from HIV infected patients than in specimens from HIV uninfected patients during both time periods (1993-4: 26.2% v 6.7%, p <0.001; 1998: 42.1% v 29.6%, p >0.09).

CONCLUSIONS

Based on two cross sectional surveys, 4 years apart, chancroid remained the leading cause of GUD in men who presented at the STD clinic with genital ulcers in the mining community of Carletonville, South Africa. The relative prevalence of primary syphilis has remained low. However, HSV-2 has emerged as a more significant cause of GUD and the proportion of GUD patients infected with more than one agent also increased significantly. HSV-2 DNA was detected in a significantly higher proportion of ulcer specimens from HIV positive patients than from HIV negative patients. No association was found between HIV infection status and the relative prevalence of chancroid or syphilis.

The acceptability of reuse of the female condom among urban South African women

This study assessed whether reuse of the female condom was acceptable among two groups of women in central Johannesburg, South Africa, who were taking part in two separate studies of female condom reuse. The first group consisted of women (aged 17 to 43 years) attending a family planning/sexually transmitted infections (STIs) clinic who were participating in a cross-sectional survey of the acceptability of female condoms reuse (n = 100). The second group included women (aged 18-40 years) at high risk for STI (80% self-declared sex workers) who were taking part in an ongoing cohort study to investigate the safety of reuse of the female condom through a structural integrity and microbial retention study (n = 50). Among women participating in the acceptability study, 83% said that they would be willing to reuse the female condom, and 91% thought the idea of reuse of the female condom was acceptable. All women taking part in the safety of reuse study and who reused the female condom up to seven times (n = 49) reported that the steps involved in reusing the device were easy to perform and acceptable. All 49 women said they would reuse the female condom at least once, while 45% said they would use it a maximum of seven or eight times. From the results of the interviews with both study groups, it can be concluded that, among women in a South African urban environment who have used a male and/or female condom, the concept of reuse of the female condom is acceptable and thought to be a good idea.

The epidemiology of human immunodeficiency virus in South Africa

We review the epidemiology of human immunodeficiency virus (HIV) in South Africa where the prevalence of HIV infection is among the highest in the world. The epidemic reached South Africa relatively recently but the prevalence of infection has increased rapidly and there are significant differences among provinces. Although few 15-year-old people are infected the prevalence increases rapidly with age thereafter, especially among women. The prevalence of herpes simplex virus type 2 exceeds that of HIV and curable sexually transmitted infections are common. 'Circular migration' may help to explain the high rates and rapid spread of HIV in the region. The incidence of tuberculosis has increased dramatically as a result of the HIV epidemic. Antiretroviral therapy for the prevention of vertical transmission has been shown to be effective in local conditions but transmission through breast-feeding remains problematical. While some epidemiological models have been developed, much more needs to be done in this regard in order to plan, coordinate and evaluate an effective response to the epidemic. We conclude by discussing some of the research that is needed and steps that could be taken to reduce the continued spread of the infection.

Sexually transmitted infections and HIV in a rural community in the Lesotho highlands

OBJECTIVES

To conduct a knowledge, attitude, and practice (KAP) study and to determine the prevalence of sexually transmitted diseases (STDs), including HIV, in a community residing in remote, rural Lesotho.

METHODS

In 1995 a cross sectional, community based epidemiological study was conducted on a population of 7500 people living in 89 villages. A total of 29 villages were randomly selected and a systematic sample of houses within villages was obtained. Questionnaires were administered to subjects after written consent was obtained. Determination of N gonococcus and C trachomatis infection was done on urine using ligase chain reaction (LCR) technology. Using blood specimens, syphilis was diagnosed by RPR and TPHA tests and HIV by a single ELISA and confirmed with a western blot.

RESULTS

Questionnaires were administered to 277 women, 100 men, and 149 youths (12-15 years). Chlamydia was diagnosed in 28.4% of adults, gonorrhoea in 5.9%, syphilis in 11.3%, and HIV infection in 6.3%. All cases of HIV occurred along the main road (p = 0.001) and 72% of individuals with gonorrhoea were co-infected with chlamydia (p = 0.0001). 11.6% of women and 38.0% of men had had sex with a non-regular partner in the past 3 months and none had used condoms.

CONCLUSION

A high prevalence of STDs and HIV infection was found in a population characterised by low levels of knowledge about STD/HIV, high risk sexual behaviour, and evidence of inappropriate health seeking behaviour for STDs.

Seroprevalence and incidence of genital ulcer infections in a rural Ugandan population

OBJECTIVES

To determine age-sex specific seroprevalence and incidence rates of Treponema pallidum, Haemophilus ducreyi, and HSV-2; to assess the association between HIV-1 status and incidence of these STIs; and HSV-2 serostatus with number of lifetime sexual partners.

METHODS

Antibodies against HIV-1, T pallidum, H ducreyi, and HSV-2 infections were tested using approximately 1000 paired (2 year interval) sera collected from a rural adult (15-54 years) population cohort in south west Uganda.

RESULTS

Overall HIV-1 prevalence was 4.9%. Prevalence for T pallidum was 12.9% among males and 12.6% among females. The corresponding rates for H ducreyi were 9.8% and 7.3% respectively. HSV-2 prevalence rates were considerably lower in males (36.0%) than in females (71.5%), p < 0.001. Incidence rates for T pallidum per 1000 person years of observation were 8.4 for males and 12.3 for females. The corresponding rates for H ducreyi were 24.6 and 20.0 and for HSV-2 were 73.2 and 122.9 per 1000 person years of observation, respectively. The RR of HSV-2 incidence was 3.69 in HIV seropositive cases versus HIV seronegative after adjusting for age and sex. The corresponding RR for H ducreyi was 3.50 among female HIV positive cases versus negatives with no effect seen in males. Association between HIV-1 prevalence and prevalence of other STIs was significant (Mantel-Haenszel test) for H ducreyi (p = 0.01) and for HSV-2 (p = 0.004) but not for T pallidum (p > 0.4). HSV-2 prevalence was associated with number of lifetime sexual partners (females, p = 0.003; males, p = 0.08).

CONCLUSIONS

The results have provided a reliable estimate of the magnitude of the STI problem and demonstrated an association between HIV-1 status and serology of other STIs in a general rural population in sub-Saharan Africa. The study has also highlighted a correlation between HSV-2 seropositivity and number of reported lifetime sexual partners.