Prevalence and Characteristics of Rectal Chlamydia and Gonorrhea Cases Among Men Who Have Sex With Men After the Introduction of Nucleic Acid Amplification Test Screening at 2 Canadian Sexually Transmitted Infection Clinics

In Brief We sought to determine the prevalence of rectal chlamydia and gonorrhea after the introduction of nucleic acid amplification tests for screening in men reporting receptive anal intercourse. The rectal chlamydia prevalence was 14.1% (95% confidence interval, 11.9–16.3), and the gonorrhea prevalence was 5.9% (95% confidence interval, 4.4–7.3). Most cases were positive only from the rectum. Rectal chlamydia and gonorrhea in men who have sex with men reporting receptive anal intercourse was common (14.1% and 5.9%, respectively).