In 1979, this germ was first found in the human body. The virus was first transferred to humans from monkeys in Africa. Later it spread to America and Europe. This disease is not spread by touch, sports, hugs, mosquito bites, clothes etc. It is spread only through sexual contact and blood. In 2000, there were about 3.6 million AIDS patients in the world. 36 million died of AIDS in the world in 2012.