Lack of Sex and HIV Ed
One might think that older Americans know more about sex, but that often isn't true. Many older people actually know less about HIV/AIDS and how to protect themselves in comparison to their younger counterparts. Think about it: AIDS wasn't necessarily part of their upbringing when they were learning about sex for the first time.
For many people over 50, using condoms and other forms of contraception is a foreign concept, especially for people who have been married for a long time and during their childbearing years may have relied on birth control pills and the rhythm method to prevent pregnancy. Also, some folks just don't even know basic HIV transmission facts or that unprotected sex and sharing needles are risk factors.