Attorney says activist, Democratic Party donor is victim of extortion plot
Accused of knowingly infecting ex-boyfriend
Calif. officials use app to educate
Most OK receiving safe-sex messages
Body found days after reported missing
Encouraging HIV testing among app users
Reported cases nearly doubled
Arango forced to resign in nude pic scandal
Seeks to drive down HIV infection rate
Reachers found the hook-up app most effective in recruiting study subjects
