Increased funding, targeted prevention efforts and better treatment have helped to slow down the HIV epidemic in the United States.
The number of new HIV-positive cases has decreased significantly, according to the Centers for Disease Control and Prevention (CDC), with the number of new HIV diagnoses declining by 19 percent from 2005 to 2014.
This is not the case in many parts of the country, however.
As AIDS and public health researchers, we are among those who are alarmed by areas in the southern United States where the numbers of cases have not declined and even more by the areas in which increases have occurred.
In particular, we have seen some disturbing trends in Prince George's County, Maryland, where we do research on AIDS and health disparities.
These are similar to trends in other nonurban settings in the southern United States where a majority of African-Americans live.