HIV Transmission in Male Serodiscordant Couples in Australia, Thailand and Brazil

Reports an interim analysis of the relationship between undetectable viral load and HIV transmission in the Opposites Attract observational cohort study of homosexual male serodiscordant couples in Australia. Finds no linked HIV transmissions in 150 ‘couple years of follow up’ among homosexual male serodiscordant couples, despite close to six thousand acts of condomless anal sex.