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JHU has stopped collecting data as of

03 / 10 / 2023

After three years of around-the-clock tracking of COVID-19 data from...

By Region

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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January 24, 2023


  • Colorado shows gaps in reporting on January 17, 2023 and January 19, 2023. We are investigating whether these gaps were one-off interruptions or changes to reporting cadence.

June 9, 2022


  • Colorado continues to release ‘older cases’ on a biweekly basis, which will cause spikes on release dates. These updates will occur until all older cases have been reviewed and reported. The next spike is expected on Thursday, June 9, 2022.

May 24, 2022


May 13, 2022


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