http://d.yimg.com/a/p/afp/20100719/c...FXYwTp.seyiQ--AP - For the first time, a vaginal gel has proved capable of blocking the AIDS virus: It cut in half a woman's chances of getting HIV from an infected partner in a study in South Africa. Scientists called it a breakthrough in the long quest for a tool to help women whose partners won't use condoms.
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