Experts say a twice-yearly injection that offers 100% protection against HIV is ‘stunning’ The Associated PressTwice-yearly shot proves successful at preventing HIV infection among women, trial data shows CNNHIV drug could be made for just $40 a year for every patient The GuardianExperts laud injection that reportedly offers 100% protection against HIV/AIDS Fox NewsHIV prevention may only require two injections per year Science News Magazine