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PubMed2001

The epidemiology of trichomoniasis in women in four African cities.

OBJECTIVES: To describe the epidemiology of Trichomonas vaginalis infection and its association with HIV infection, in women in four African cities with different levels of HIV infection. DESIGN: Cross-sectional study, using standardized methods, including a standardized questionnaire and standardized laboratory tests, in four cities in sub-Saharan Africa: two with a high prevalence of HIV infection (Kisumu, Kenya and Ndola, Zambia), and two with a relatively low prevalence of HIV (Cotonou, Benin and Yaoundé, Cameroon). METHODS: In each city, a random sample of about 2000 adults aged 15-49 years was taken. Consenting men and women were interviewed about their socio-demographic characteristics and their sexual behaviour, and were tested for HIV, syphilis, herpes simplex virus type 2 (HSV-2), gonorrhoea, chlamydial infection, and (women only) T. vaginalis infection. Risk factor analyses were carried out for trichomoniasis for each city separately. Multivariate analysis, however, was only possible for Yaoundé, Kisumu and Ndola. RESULTS: The prevalence of trichomoniasis was significantly higher in the high HIV prevalence cities (29.3% in Kisumu and 34.3% in Ndola) than in Cotonou (3.2%) and Yaoundé (17.6%). Risk of trichomoniasis was increased in women who reported more lifetime sex partners. HIV infection was an independent risk factor for trichomonas infection in Yaoundé [adjusted odds ratio (OR) = 1.8, 95% confidence interval (CI) = 0.9-3.7] and Kisumu (adjusted OR = 1.7, 95% CI = 1.1-2.7), but not in Ndola. A striking finding was the high prevalence (40%) of trichomonas infection in women in Ndola who denied that they had ever had sex. CONCLUSION: Trichomoniasis may have played a role in the spread of HIV in sub-Saharan Africa and may be one of the factors explaining the differences in levels of HIV infection between different regions in Africa. The differences in prevalence of trichomoniasis between the four cities remain unexplained, but we lack data on the epidemiology of trichomoniasis in men. More research is required on the interaction between trichomoniasis and HIV infection, the epidemiology of trichomoniasis in men, and trichomonas infections in women who deny sexual activity.

Adolescent↗
PubMed1999

A study of field-based methods for diagnosing reproductive tract infections in rural Yunnan Province, China.

Reproductive tract infections are a significant cause of poor health among rural Chinese women. This study assesses the accuracy of simple, field-based methods of diagnosing five reproductive tract infections (trichomonas, candida, bacterial vaginosis, gonorrhea, and chlamydia) in two rural Chinese counties, using "gold standard" laboratory diagnosis as the reference. Self-reported symptoms and clinical examination proved inadequate for making accurate diagnoses, because many infected women show no symptoms or are infected with two or more conditions. The use of simple tests such as KOH staining, wet mount, Gram's stain, and pH of discharge greatly improved diagnostic accuracy, especially for candida and trichomonas, the two most common infections. Promoting the use of such diagnostic approaches by rural Chinese medical and family planning health providers would reduce the prevalence and severity of these preventable and easily treated infections.

Adolescent↗
PubMed2006

Double-stranded RNA viral infection in Cuban Trichomonas vaginalis isolates.

Trichomonas vaginalis can be infected with double-stranded RNA (dsRNA) viruses designated T. vaginalis virus (TVV), which may have important implications for trichomonal virulence and disease pathogenesis. We tested for TVV in 40 fresh T. vaginalis isolates from Cuban patients by total extraction of nucleic acids (DNA and RNA). TVV was detected in 22 (55%) of the 40 T. vaginalis isolates. This gives an estimate of the infection rate of Cuban T. vaginalis isolates by the dsRNA virus. Future research should focus on the association between trichomonosis symptoms and the presence of TVV.

Adolescent↗
PubMed1995

Reproductive tract infections and abortion among adolescent girls in rural Nigeria.

Few studies from developing countries have investigated reproductive tract infections or other indicators of sexual health among unmarried adolescent girls in rural areas. We have obtained baseline demographic, clinical, and microbiological data on reproductive tract infections and induced abortion in girls in a rural area of southeast Nigeria, in order to assess the need for health care for adolescents. 868 females attended for interview and examination: 458 aged 20 and above and 410 aged 12-19, the latter representing 93.4%of the adolescent population. 43.6% of those < 17 and 80.1% aged 17-19 years were sexually active and at least 24.1% had undergone an induced abortion; only 5.3% had ever used a modern contraceptive. Vaginal discharge was reported by 82.4%, though few sought treatment. 94.1% of sexually active adolescents and 97.6% of sexually active women 20 years old or over were gynaecologically examined and screened for reproductive tract infections. Of those aged less than 17, 19.8% had symptomatic candida and 11.1% trichomonas infections. Among those aged 17-19 years, chlamydia was detected in 10.5%, and symptomatic candidosis in 25.6%; this was the group most likely to have any infection (43.8%). 42.1% of sexually active adolescents had experienced either an abortion or a sexually transmitted disease. Syphilis was the only infection for which the incidence clearly increased with age. Health-care services for adolescents in this community are needed and should include sex education, contraceptive provision (especially barrier methods), and access to treatment for reproductive tract infections. Investments in health for this age group will have an effect on subsequent reproductive health.

Abortion, Induced↗
PubMed1975

[Early identification of cancer through vaginal cytology in a venereal disease clinic].

100 women, routinely and regularly examined in a venereal disease clinic, have been investigated using Papanicolaou smears of the uterine cervix for. 1. Papanicolaou group, 2. trichomonas infection, 3. assessment of vaginal microbiology. A group III was determined in 11, a group IV/V in 2 women. Trichomonas vaginalis was present in 60% of the cases. Only 9% of the smears showed normal Döderlein bacteria; 91% contained mixed bacteria. The findings are compared with a control group and are discussed in the light of epidemiologic studies indicating the close rôle of certain factors in the sexual life for the development of cervical cancer. The necessity to regard this population as a high risk group in general cytological screening has been stressed, especially to the advantage of the adolescent and young females in this group.

Adolescent↗