| http://www.w3.org/ns/prov#value | - An update.J Campo , M A Perea , J Del Romero , J Cano , V Hernando , A BasconesHuman immunodeficiency virus (HIV) and many other viruses can be isolated in blood and body fluids, including saliva, and can be transmitted by genital-genital and especially anal-genital sexual activity.
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