Wonderful news. HIV vaccine shows promise in human trial The treatment, which aims to provide immunity against various strains of the virus, produced an anti-HIV immune system response in tests on 393 people, a study in the Lancet found. It also protected some monkeys from a virus that is similar to HIV. More testing is now needed to determine if the immune response produced can prevent HIV infection in people. 'Mind-blowing' cows hold clue to beating HIV The man who saved thousands of people from HIV New antibody attacks 99% of HIV strains About 37 million people worldwide live with HIV or Aids, and there are an estimated 1.8 million new cases every year.