High prevalence of sexual Chlamydia trachomatis infection in young women from Marajó Island, in the Brazilian Amazon

Background Chlamydia trachomatis is the most prevalent bacterial sexually transmitted infection (STI) in the world. Approximately 80% of infected women are asymptomatic, although this infection can lead to serious complications in the female reproductive tract. Few data on Chlamydia infection are available in rural Amazonian communities.