RT Journal Article SR Electronic T1 Infectious syphilis unmasking drug resistance in an individual with long-term virological suppression on antiretroviral therapy JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 276 OP 277 DO 10.1136/sti.2010.043364 VO 86 IS 4 A1 Read, Phillip J A1 Fox, Julie YR 2010 UL http://sti.bmj.com/content/86/4/276.abstract AB This case report describes the case of an HIV-positive individual who had long-term virological suppression on antiretroviral therapy, who manifested HIV drug resistance during a syphilis-induced HIV viral load increase. This highlights how the acquisition of a sexually transmitted infection can have important ramifications for HIV suppression and potential HIV transmission to sexual partners.