27 years from the discovery of the Human Immunodeficiency Virus. Short history of a new disease of the XX Century

Abstract

In a short way we approached the history of the discovery of the Human Immunodeficiency Virus causing the Adult's Immunodeficiency Syndrome. We expose all the theories that try to explain its beggining and also those wich are more accepted at this moment. We recognize the emergency of the virus in Africa, and also its precense before the 80 es of the last century. We also make a short review on the current status of the investigations on its therapeutics and on the searchs for a vaccine, difficulted by genic transformations of the proper virus, which shows an elevated recombination variability. That is why, prevention is the most eficaceous way of avoiding it.