An injection given just twice a year could herald a breakthrough in protecting the population that has the highest infection rates.An injection given just twice a year could herald a breakthrough in protecting the population that has the highest infection rates.Read MoreAcquired Immune Deficiency Syndrome, Clinical Trials, Drugs (Pharmaceuticals), Women and Girls, Prices (Fares, Fees and Rates), Research, Developing Countries, Medicine and Health, Truvada (Drug), Gilead Sciences Inc, Viiv Healthcare Ltd, Africa, South Africa, Uganda, your-feed-science, your-feed-healthcareNYT > Health