“Every day a mommy emails me to say that her baby is HIV-negative” Dr Sindi @sindivanzyl is probably best known for her work answering questions from mothers and mothers-to-be, about how to prevent HIV transmission to their babies. Using social media to reach mothers around the world, those who question her directly, and those who read her answers to other mothers and apply them to their own babies, has Dr Sindi says “changed my life”