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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.


Region Notes

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May 13, 2022

Colorado

  • On May 3, 2022, Colorado reported a backlog of deaths data.

Maryland

  • On May 12, 2022, Maryland posted 350 deaths for Dorchester County, and laterr corrected to 107 deaths. This caused a drop of 243 deaths.

Montana

  • As of May 10, 2022, Montana has shifted to once weekly reporting.

North Carolina

Pennsylvania

  • As of May 10, 2022, Pennsylvania has shifted to once weekly reporting (Wednesdays). The JHU Coronavirus Resource Center will collect data for Philadelphia city from the county health department. Philadelphia city updates Mondays and Thursdays.

May 4, 2022

Delaware

  • As of April 30, 2022, Delaware shifted to Monday-Friday reporting.

Washington

  • On May 2, 2022, Washington reported an abnormally large count of cases. The state dashboard has a notice that “Monday, May 2, 2022: Total case counts may include up to 3,200 duplicates. The Disease Activity page is the most accurate representation of COVID-19 activity and is updated daily as new cases are identified and duplicates are resolved.

April 29, 2022

Georgia

  • As of April 20, 2022, Georgia has shifted to once per week reporting (Wednesdays).

Kansas

  • On April 22, 2022, we detected an issue with the data collection for Kansas; it was corrected on April 25, 2022.

Mississippi

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