New statistics from countyhealthrankings.org show fluctuating sexually transmitted disease data in Eastern Iowa. If you look at he image below, the darker the blue -- the higher the rate. Black Hawk County has some of the highest rates of chlamydia in the region. Yikes. Little Mahaska County in SE Iowa also scores high on people scoring without using protection. Wrap it up!

In the Corridor, Johnson edges out Linn County with 471 people per 100,000 carrying the bacteria. Fayette has the honor of possessing the smallest number of cases in Eastern Iowa.

[Graphic: County Health Rankings and Roadmaps]

Chlamydia is the most common STD in the nation. See how your county fares in the survey by clicking here.