The percentage increase for each state was calculated by comparing new cases numbers for the weeks of July 8-14 and July 15-21.

Mississippi saw the largest jump in the country over the last 14 days. The state reported a 7,982 new cases in the week July 15-21, a 50.6 percent increase on the 5,297 new cases reported the previous week.

Earlier this month, Mississippi Gov. Tate Reeves announced the state would be pausing any plans to reopen following a spike in cases.

“Things are getting worse, not better,” he said at a news briefing. “It’s not that our current rules are too loose. Our challenge is that our people aren’t following even the simplest of rules. Additional orders are useless if people will not follow what we have in place now.”

Over 14.9 million people across the globe have been infected since the virus was first reported in Wuhan, China, including 3.9 million in the U.S. More than 8.4 million globally have reportedly recovered from infection, while over 617,200 have died as of Wednesday, according to the latest figures from Johns Hopkins University.

13 states where new COVID-19 cases spiked by over 20 percent

(according to case data from July 8 to 21 compiled by Johns Hopkins University)

  1. Mississippi

Increase: 50.6 percent July 15 to 21: 7,982 new cases July 8 to 14: 5,297 new cases

  1. Kentucky

Increase: 41.9 percent July 15 to 21: 3,837 July 8 to 14: 2,704

  1. Delaware

Increase: 40 percent July 15 to 21: 777 July 8 to 14: 555

  1. Missouri

Increase: 37.9 percent July 15 to 21: 5,962 July 8 to 14: 4,322

  1. Maryland

Increase: 36.7 percent July 15 to 21: 5,285 July 8 to 14: 3,864

  1. Nevada

Increase: 35.8 percent July 15 to 21: 7,912 July 8 to 14: 5,826

  1. Washington

Increase: 30.1 percent July 15 to 21: 6,304 July 8 to 14: 4,845

  1. Michigan

Increased: 29.8 percent July 15 to 21: 5,146 July 8 to 14: 3,964

  1. Idaho

Increase: 28.9 percent July 15 to 21: 4,103 July 8 to 14: 3,181

  1. Indiana

Increase: 28.8 percent July 15 to 21: 5,231 July 8 to 14: 4,059

  1. Maine

Increase: 24.6 percent July 15 to 21: 157 July 8 to 14: 126

  1. Virginia

Increase: 22.4 percent July 15 to 21: 6,985 July 8 to 14: 5,703

  1. Montana

Increase: 21.4 percent July 15 to 21: 759 July 8 to 14: 625

The graphic below, provided by Statista, illustrates the spread of COVID-19 cases in the U.S.

The graphic below, provided by Statista, illustrates the U.S. states with the most COVID-19 cases.

The graphic below, provided by Statista, illustrates the number of new COVID-19 cases in the U.S. states and the European Union.