In 2010, when South African researchers tested a vaginal gel that reportedly lessened a woman’s chance of contracting HIV up to 54 percent, they decided to conduct a larger study involving 5,000 women from South Africa, Uganda, and Zimbabwe. But for some reason the gel has seemed to stop working and six percent of the gel users in the newest study have contracted HIV. Researchers have since called off the large scale testing to figure out WTF went wrong. Perhaps the women used the gel incorrectly?
Image via C. Goldsmith