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One dose of raltegravir gel three hours after sex might prevent HIV infection

Five years on from circumcision trial, nine in ten participants are circumcised and HIV incidence is two-thirds lower

Study finds most lubricants damage rectal cells and some increase HIV activity

Samples obtained after prostate massage a good guide to HIV load in semen

Young people's stories about condoms can help re-shape prevention messages

Multiple sexual partnerships more common in Uganda than usually thought

Huge decline in HIV rates in Zimbabwe driven by fear of infection

HIV prevention: does scaring people work?

Ugandan study shows little evidence of increase in risky sex after HIV treatment roll out