First mother-to-child transmission

At the end of 1982, the CDC reports cases of unexplained immunodeficiency and opportunistic infections in infants in the USA whose mothers either have a history of injecting drug use or are of Haitian descent. None of the children are known to have received blood products but their symptoms are AIDS-defining. It is becoming clearer that AIDS is caused by an infectious agent (now known to be HIV), not limited to gay men.