And in a few cases, mothers have passed HIV through breast milk. Before 1985, some people became infected through a transfusion of blood or blood products or an organ transplant. Today, the risk of infection through blood transfusions is very slight. In 1985 a test was developed to detect the virus in blood. Some people who take part in high-risk activities have a false sense of security.
Some men have occasional sexual contact with infected women or men.
These men may be married. Married men who have sex with other men usually do not think of themselves as homosexual or bisexual. These men may falsely think they are not endangering themselves or their sexual partners. They may believe they are not at risk. But if they share injection equipment with others, they may become infected.