This series highlights current challenges to the management of Neisseria gonorrhoeae, Chlamydia trachomatis, Mycoplasma genitalium, non-gonococcal urethris, bacterial vaginosis, syphilis and Trichomonas vaginalis. We have assembled a collection of state-of-the-art reviews that capture the latest evidence and opinions on where future treatment efforts should be placed. BMC Infectious Diseases