The billionaire philanthropist says we need to focus on curbing infections among teenage girls and young women.
In the vagina's ecosystem, mundane bacteria matter more than you think.
Sex workers are being denied their basic rights, and their stigmatisation is hampering the country’s fight against HIV, writes Relebohile Montana.
Health experts are at loggerheads over research that raises questions about the possible link between the contraceptive injection and HIV.
More harm reduction policies and programmes will help reduce dangers of practices such as sharing dirty needles and ‘flashblooding’.