Figure 2

See text for description.

In 2018, rates of reported cases of chlamydia were highest in the South (565.2 cases per 100,000 population, 1.9% increase from 2017), followed by the West (548.5, 5.6% increase from 2017), Midwest (524.0, 2.2% increase from 2017), and Northeast (492.1, 2.3% increase from 2017). During 2009–2018, rates of reported cases of chlamydia increased in all regions. During 2012–2013, rates decreased in the Northeast, Midwest, and South and remained stable in the West. Rates started increasing in 2013, and have increased in all regions over each of the last five years. During 2014–2018, the largest increase occurred in the West (436.4 to 548.5 cases per 100,000 population, 25.7% increase).