Aussie study presented at world HIV conference
None in research group contracted HIV over two-year period
Hook-up apps, condomless sex likely factors
Annual event is Saturday in Dupont Circle
Other STIs down but gay, bi men at risk
Focus on reducing infections and discrimination
1 in 12 gay men reported infection
More likely to be diagnosed with gonorrhea, Chlamydia
7 percent increase seen in visits
Meth among drugs cited in report
