Someday, an Arm Implant May Prevent H.I.V. Infection for a Year The New York TimesMerck unveils early data on HIV drug it says could be 'a game changer' STATNew implant, vaccine trial offer fresh HIV hope Raw StoryImplanted drug could someday prevent HIV infection Washington PostTrial of HIV prevention implant hailed as boost in fight against disease The GuardianView full coverage on Google News