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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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December 19, 2022

New Jersey

  • On December 1, 2022, there was a spike in “Unassigned, New Jersey” cases. This was due to a data quality issue on the backend of the New Jersey COVID-19 dashboard from December 1, 2022 to December 4, 2022. In effect, this resulted in the cumulative cases for “Warren, New Jersey” being reported in both the “Warren, New Jersey” and “Unassigned, New Jersey” entries. We have corrected our historical data for this period to correct this error and apologize for any inconvenience it may have caused.

November 18, 2022

New Jersey

  • As of November 14, 2022, New Jersey has moved to reporting M-F only.

April 21, 2021

New Jersey

  • New Jersey on April 21, 2021 reported a significant increase in its 7-day moving average for test positivity rate from 7.4% to 14.2%. The spike occurred today because 171,959 cases that were reported on April 13 fell out of the week-long period used to calculate the 7-day moving average.