In the last year, Durham County has seen about 100 new cases of HIV reported. It's also seen about 20 new cases of syphilis.
Generally speaking, that's on par with other metro areas in the state, which are seeing more cases of STDs, while North Carolina's rural areas are seeing a decline.
It's hard to know what is accounting for the rise. The most obvious possibility is an increase in unsafe sexual activity. But there's also a chance that, as screening becomes more commonplace and more effective, we're simply identifying more cases that were there to begin with.