Chersich, M.

sex workers worker study prevalence intervention presumptive treatment treatment condom use condom infection gonorrhoeae sti prevalence presumptive trachomati effect control health transmission sti control review chlamydia article steen sex transm evidence syphili client william curable stis outcome gonorrhoea lippincott wilkin indonesia prevention india curable coverage population impact transm screening decline result reproduction hiv prevention service copyright azithromycin 1 g condition hiv transmission trial chancroid reduction antibiotic group ratio sex work condom promotion design rate ratio regimen reza-paul odds ratio randomized frequency ppt interventions report disease azithromycin syndromic case management promotion curable stis steen sex work networks stis steen country meta-analyse neisseria gonorrhoeae quality series