Onward transmission of HIV among MSM is significantly associated with recent infection, sexually transmitted diseases and higher viral load, and reduced by effective HAART. The majority of new infections appear to occur from individuals whose infection was undiagnosed at the time of transmission.

Objective: To investigate the extent to which primary HIV infection (PHI) presents to healthcare providers and the degree to which it is unrecognised. Methods: All individuals diagnosed with having recent HIV infection between 2003 and 2005 were identified (based on the following criteria: an evolving antibody response, negative HIV test within 18 months or a serological testing algorithm for recent HIV seroconversion). Symptoms of PHI and previous presentation to other healthcare providers were ascertained from HIV clinic notes and laboratory records (a single laboratory performing all of the HIV tests in the area). Results: Of the 108 subjects, 103 (95%) were male and 93 (86%) were men who had sex with men.

No abstract