Ndowa, F.

sex workers study worker presumptive treatment intervention prevalence treatment infection control effect presumptive condom use review gonorrhoeae health steen trachomati evidence chlamydia transmission article result outcome sti control sti prevalence sex transm condom syphili gonorrhoea trial client william transm sex work curable stis ratio impact lippincott design wilkin rate ratio population screening randomized odds ratio report disease reproduction decline azithromycin 1 g copyright hiv transmission stis steen country quality meta-analyse group series bene fits neisseria gonorrhoeae indonesia suppl curable method condition prevention fi eld conditions analysis antibiotic resistance identi modelling cohort india study designs health impact randomized control trial chancroid inclusion criteria guideline hiv cofactors