American researchers have studied a tissue sample from the 1960s, recovering nearly the entire HIV virus genetic code. Based on this information, the researchers can determine accurately when the human immunodeficiency virus passed from chimps to humans. Some earlier estimates suggest this happened in the 1920s but the latest research establishes an earlier date in the 1900s. Determining when the HIV epidemics began is very important because the timeframe will enable scientists come up with the factors that facilitated the spread of the virus.

The number of HIV deaths worldwide has gone down 33 per cent since 2010, a report by UNAIDS and the United Nations suggests. Unfortunately, some parts of the world have seen an increase in the number of newly infected individuals and the overall number of people living with HIV or AIDS. The report concludes that medical advances like HIV PEP and HIV PrEP have played an important role in controlling the epidemic and that researchers may soon be capable of formulating a reliable, effective and widely accessible cure.

Johnson & Johnson is just one of the pharmaceutical companies that will be carrying out a human vaccine HIV test. The company has already completed animal studies and it has established the safety of the vaccine. It will now have to work towards proving the vaccine’s effectiveness. Results from the trial are anticipated in 2023 but it isn’t the only experiment currently underway. A HIV vaccine trial is already taking place in Africa. The African study involves female volunteers due to the disproportionately high infection risk women in many African countries face.