12 febrero 2015
Engaging in unprotected sex with multiple partners increases the risk of contracting multiple strains of HIV, the virus that causes AIDS. Once inside a host, these strains can recombine into a new variant of the virus. One such recombinant variant observed in patients in Cuba appears to be much more aggressive than other known forms of HIV. Patients progress to AIDS within three years of infection — so rapidly that they may not even realize they were infected.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/hQ9wgbE8pHA/150212122217.htm
