Question

AIDS is caused due to physical contact then how did the first human got the desease??

Answer 1

AIDS can be infected in the following ways

• From blood transfusions. In some cases, the virus may be transmitted through blood transfusions. American hospitals and blood banks now screen the blood supply for HIV antibodies, so this risk is very small.
• By sharing needles. Sharing contaminated intravenous drug paraphernalia (needles and syringes) puts you at high risk of HIV and other infectious diseases, such as hepatitis.
• During pregnancy or delivery or through breast-feeding. Infected mothers can pass the virus on to their babies. HIV-positive mothers who get treatment for the infection during pregnancy can significantly lower the risk to their babies.
• Sexual transmission

There is no direct evidence of how the first person got HIV.But from the above mode of transportation,It could be due to any of the above.