IN 1937 US SURGEON GENERAL Thomas Parran estimated that 10% of Americans would
be infected with syphilis during their lives. 1 Rates of primary and secondary syphilis …

Mycoplasma genitalium has been causally linked with nongonococcal urethritis in men and
cervicitis, pelvic inflammatory disease, preterm birth, spontaneous abortion, and infertility in …

Background: Estimates of the duration of untreated genital infections with Chlamydia
trachomatis vary. Accurately estimating the distribution of the duration of infection would be …

Background Many sex partners of persons with gonorrhea or chlamydial infections are not
treated, which leads to frequent reinfections and further transmission. Methods We randomly …

Background. Azithromycin or doxycycline is recommended for nongonococcal urethritis
(NGU); recent evidence suggests their efficacy has declined. We compared azithromycin …

Background. Strain typing is a tool for determining the diversity and epidemiology of
infections. Methods. Treponema pallidum DNA was isolated from 158 patients with syphilis …

Objective: Men who have sex with men (MSM) have higher rates of HIV and other sexually
transmitted infections than women and heterosexual men. This elevated risk persists across …

Background: Serosorting is the practice of preferentially having sex with partners of
concordant HIV status or of selectively using condoms with HIV-discordant partners …

Objective: To develop and validate an easy-to-use prediction model for HIV acquisition
among men who have sex with men (MSM). Methods: We developed prediction models …

Mycoplasma genitalium is associated with acute and chronic urethritis in men. Existing data
on infection in women are limited and inconsistent but suggest that M. genitalium is …