Anti gay-marriage atheist??

[Pyrrho]

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2. Homosexual men are more than twice as likely to spread HIV and other STDs than straight men, which applies to lesbian woman too. 
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Curiously, according to the CDC, lesbian sex rarely results in the transmission of HIV.  Women who get HIV almost always get it from sex with a man or injection drug use ("IDU" in their chart).  In fact, transmission of HIV via lesbian sex is so rare it does not even appear in the CDC's chart of how HIV is transmitted:



"MSM" in the chart is men who have sex with men, which obviously is not about women.

http://www.cdc.gov/hiv/statistics/basics.html

(At the above link, click on "How does HIV affect different groups of people?" to see the chart.)

See also:

http://www.cdc.gov/nchhstp/newsroom/docs...7-2010.pdf

Basically, your source is an idiot who does not pay attention to actual facts.  If you want to avoid HIV, your best bet is to never use injected drugs and never have sex with a man.  Especially, never have sex with a man.

It is worth noting, however, that it is possible to get HIV via lesbian sex, so one is not necessarily safe if one is a lesbian who does not use injectable drugs.  See:

http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6310a1.htm