Background:Little is known about infection rates for human immunodeficiency virus (HIV) and other diseases that can be transmitted sexually in Bangladeshi women who may be at intermediate levels of risk-that is, women who are not commercial sex workers (CSWs) but whose sexual contacts may include men at high risk for STD. This study examines HIV/hepatitis/STD and other genital tract infections in women living near Tejgaon truck stand in Dhaka, Bangladesh. Methods: This population based study was conducted from January to December 1998. A random sample of 384 women provided urine and blood samples and participated in an interview; 261 of them also had a physical examination in which vaginal and cervical specimens were taken. Laboratory tests included PCR on urine and cervical swabs for gonorrhoea and chlamydia, culture for trichomoniasis, serology tests for syphilis, herpes simplex 2, hepatitis B, C, D, HIV1, HIV2, and clinical diagnoses of other genital tract infections. Results: None of the participants tested positive for HIV. In the 261 women who had a physical examination, trichomoniasis was detected in 19.5%, chlamydia in 3.4%, gonorrhoea in 5.4%, bacterial vaginosis in 37.2%, and candidiasis in 10%. In the full sample of 384 women, with tests of urine and blood, prevalence of infection with chlamydia, gonorrhoea, syphilis, and herpes simplex 2 was detected in 0%, 6.3%, 5.7%, and 32% respectively. Almost 50% of the subjects had ever been exposed to hepatitis B, 3.6% were currently infective, 1.6% had hepatitis C, and none had hepatitis D. Conclusion:The high prevalence of certain of these infectious diseases indicates the need to implement prevention interventions with these women and, perhaps more importantly, with their male partners. Qualitative research is needed to provide insights into their sexual behaviour and the contexts in which high risk behaviours occur. (Sex Transm Inf 2001;77:344-350)
The results of the study illustrate the importance of educating health care practitioners about the dangers of unsterile injections, and of educating men in the trucking industry as well as their partners (CSW in particular) about the importance of condom use, especially in high-risk sexual contacts.
A review of published and unpublished data indicates the prevalence of high-risk behaviours for HIV transmission in segments of the Bangladeshi population. These include casual unprotected sex, heterosexual as well as between males, prior to and after marriage. Intravenous drug use (IVDU) exists though illicit drugs are more commonly inhaled. There is a fear, however, that inhalers may turn to injecting drugs, as is common in neighbouring countries. The lack of public awareness of HIV/AIDS, and misconceptions about the disease, may contribute to continued high-risk behaviours by segments of the population and, thus, to the spread of HIV. Bangladesh's proximity to India and Myanmar (countries with high HIV endemicity and a rapidly growing number of cases) increases fears of an epidemic in Bangladesh. This proximity will only be a risk factor, however, if highrisk contacts occur between nationals of these countries.
Behavioural risk factors for HIV/AIDS in Bangladesh were reviewed in a preceding article in this journal. Omitted from that review was a discussion of potential biomedical risk factors including: (i) an unregulated blood supply system in which blood used in transfusions is not screened for HIV and is donated primarily by professional donors: (ii) unsterile injections in non-formal and formal health-care settings; and (iii) a high prevalence in high-risk groups of other sexually transmitted diseases (STDs) which may function as co-factors for HIV transmission, particularly if chronically untreated. Studies elsewhere in the world suggest that the unregulated blood supply system, in particular, poses a serious danger in terms of the spread of the HIV epidemic. While certain socio-cultural factors may be contributing to low levels of HIV in Bangladesh, the prevalence of biomedical and behavioural risk factors suggest the importance of implementing targeted cost-effective interventions now.
Objectives: This study characterises the prevalence of a broad spectrum of sexually transmitted diseases (STDs) (herpes simplex virus 2, syphilis, chlamydia, gonorrhoea), and examines associations between risk factors and infection in men working in Bangladesh's trucking industry. Given the high risk sexual behaviours of truck drivers and helpers in many contexts, as well as the direct health effects of STDs and their role in facilitating HIV transmission, it is important to understand the prevalence of STDs and associated risk factors in this population. Methods: A cross sectional study was conducted at Tejgaon truck stand, one of the largest truck stands in Dhaka, the capital city. The study group, comprising 388 truck drivers and helpers, was selected via a two tiered sampling strategy. Of 185 trucking agencies based at the truck stand, 38 agencies were randomly selected, and a mean of 10 subjects (drivers/helpers) were recruited from each agency. Urine and blood samples were collected from subjects after an interview about their lifestyle and a comprehensive physical examination. Gold standard laboratory tests were conducted for the detection of STD. Multiple logistic regression was used to assess associations between infections and potential risk factors. Results: The levels of prevalence of disease were HSV-2 (25.8%), serological syphilis (5.7%), gonorrhoea (2.1%), chlamydia (0.8%). For infection with any bacterial STD (syphilis, gonorrhoea, or chlamydia) the only significant risk factor was having sex with a commercial sex worker in the past year (OR=3.54; CI=1.29-9.72). For HSV-2, truck helpers working primarily on interdistrict routes were significantly more likely to be infected than drivers working on these routes (OR=2.51, CI=1.13-5.55). Conclusions:The high prevalence of HSV-2, and to a lesser extent syphilis, and the low levels of condom use despite high numbers of casual sexual partners, illustrate the importance of promoting condom use, particularly in commercial sexual encounters, to men in Bangladesh's trucking industry.
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