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Data Notes

General Notes

September 14, 2021

  • Reduced counts in U.S. cases and deaths are the result of states and territories not reporting the information for some or all of the weekend. Those states and territories are: Alaska, Colorado, Connecticut, District of Columbia, Florida, Georgia, Guam, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Massachusetts, Michigan, Minnesota, Mississippi, Montana, Nebraska, Nevada, New Hampshire, New Mexico, North Carolina, Northern Mariana Islands, Oklahoma, Rhode Island, South Carolina, South Dakota, Tennessee, Utah, U.S. Virgin Islands, Virginia, Washington, West Virginia, Wisconsin, and Wyoming. Typically, these states" Monday updates include the weekend totals.

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April 29, 2022


  • On April 25, 2022, Mississippi's reporting was stale due to a state holiday.

May 18, 2021


  • Mississippi’s seven-day rolling average for test positivity rate jumped from nearly 14% to 308% because for every day of the past week the state has reported either zero or less than 200 tests. Typically, the state reports at least 10,000 tests over seven days. We are seeking answers from Mississippi officials about the abrupt decline.