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    Prevalence of Human Papillomavirus infection by age and cervical cytology in Thika, Kenya

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    Human papillomavirus (HPV) infections cause cervical cancer and premalignant dysplasia. Data on HPV and cervical cancer in Kenya are scarce. Type-specific HPV prevalence data provides a basis for assessing the impact of HPV vaccination programs on cervical cytology and how HPV based screening will influence cervical cancer prevention. To investigate HPV infections in a population in Kenya, we obtained cervical cells specimen from 498 women in a population in Thika district. We report HPV type specific prevalence and distribution data for 498 women (age range 18-74 years; mean age 36 years) recruited into the study in relation to age and cervical cytology. The study was conducted between January to May 2010. Pap smears were performed, HR HPV DNA were detected by Digene Hybrid capture 2® (hc2) test and HPV genotyping was performed with Multiplex Luminex HPV genotyping kit (Multimetrix, Progen, Germany). Samples from 106 women (21.3%) tested positive for HPV. Multiple HPV types were detected in 40 (37.7% of HC2-positive samples) and the rest had infection with single HPV type. The most common HR HPV type at all ages was HPV16, 52, 56, 66, and 18. There was a marked decline in the prevalence of HR-HPV with age. The pattern of HR HPV distribution in this population was slightly different from existing literature, which has important consequences for HPV vaccination and prevention programs
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