Man lived with the HIV virus long before it was discovered and before large numbers of people underwent AIDS tests. The same applies to other types of viruses. For example, the herpes virus is present in two out of three Americans; another two thirds carry the herpes class cytomegalovirus. Four out of five Americans walk around with the Eppstein-Barr virus, which in few of them causes mononucleosis or ‘kissing disease’. Even more people are host to […]