Undiagnosed hepatitis B and C infection is rare in Sydney gay and bisexual men attending a community HIV testing site.

This letter reports on an enhanced surveillance snapshot of hepatitis B and C at a men who have sex with men community testing site in inner Sydney. The finding show undiagnosed hepatitis B and C infection is rare in this population of gay and bisexual men. Evidence of immunity to hepatitis B through vaccination is high, however client knowledge of vaccination status is poor. Current targeted hepatitis screening practices were sufficient to detect all undiagnosed cases of hepatitis B and C in this population.