Diabetes prevalence rates jumped dramatically across the nation between 1995 and 2010, researchers at the U.S. Centers for Disease Control reported in Friday’s edition of the Morbidity and Mortality Weekly Report.

Using data from the Behavioral Risk Factor Surveillance System, an annual phone survey of adults 18 and older, the investigators found that overall, the median prevalence of diagnosed diabetes went up from 4.5 percent in 1995 to 8.2 percent in 2010.

Prevalence increased in all states, the District of Columbia and Puerto Rico, with the median up from 4.5 percent to 8.2 percent. Diabetes rates were highest in the South and in Appalachia, where Alabama, Mississippi, South Carolina, Tennessee, Texas and West Virginia all had 2010 rates above 10 percent. Rates also exceeded 10 percent in Puerto Rico.