Via Aidsmap

Almost two-thirds of gay and bisexual men consistently use condoms with casual partners as a means of HIV prevention, Swiss investigators report in the online edition of the Journal of Acquired Immune Deficiency Syndromes.

However, their research showed that 25% of men used strategies such as serosorting, strategic positioning, and withdrawal before ejaculation to try to reduce the risk of HIV transmission when having unprotected anal intercourse with casual partners.
 
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