[cyborg]

I am young enough to remember when AIDS was GRID (gay related immune deficiency). Seems to me that some heterosexual men got bored and decided to 'explore'.

[Bikers4Bush]

Speculation is that it was introduced to the hetero population by someone who thought they were bi.

[tortoise]

I am young enough to remember when AIDS was GRID (gay related immune deficiency). Seems to me that some heterosexual men got bored and decided to 'explore'.

Yep. It is fairly well documented that there was/is a male bisexual bridge to the heterosexual population, at least in the industrialized world. The relatively large number of heterosexual infections in places like the greater San Francisco Bay Area is due to a great extent to this behavioral bridge.

If this bridge didn't exist, it would greatly reduce the epidemiological footprint in the first world. In the third world, the problem is often a side effect of other medical issues.