D.C. HIV Situation Even Worse?

A report posted to The Body indicates that the recent revelation that 3% of District residents are HIV-positive may be underestimating the problem. Apparently, the D.C. government plans to scale up its testing to get a better gauge of the problem. The D.C. metropolitan area is a very porous region, however, with many people moving back and forth over the Virginia and Maryland borders. This shouldn't be just a D.C. issue, but a regional issue. How can Virginia and Maryland reach out to the District, or vice versa? What kind of coordination should be happening in the D.C. area that isn't?

It should be noted, though, that a great number of people are living longer because of currently available medications. Do you think this might have inflated the numbers somewhat?