How to Have Sex in an Epidemic: One Approach is a 1983 manual by Richard Berkowitz and Michael Callen, under the direction of Joseph Sonnabend, to advise men who have sex with men (MSM) about how to avoid contracting the infecting agent which causes AIDS. It was among the first publications to recommend the use of condoms to prevent the transmission of STDs in men having sex with men, and has even been named, along with Play Fair!, as one of the foundational publications in the advent of modern safe sex.