title: A good trend spoiled.
authors.forename: J
authors.initials: J
authors.lastname: Couzin
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology / Q000517:prevention & control*; D005260:Female; D006266:Health Education; D006801:Humans; D008297:Male; D012725:Sexual Behavior; D014481:United States / Q000453:epidemiology