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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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September 14, 2021

Florida

  • On Sept. 13, 2021, the Johns Hopkins Coronavirus Resource Center (CRC) began to use data from the Centers for Disease Control and Prevention (CDC) for cases and deaths in Florida and Iowa. The CRC prefers to collect data directly from states and counties. But Florida and Iowa only report state data once per week, a cadence that has continually caused spikes and declines in cases and deaths in both states as well as in overall U.S. information. The CRC has elected to use the more-frequently updated state-level data collected by the CDC for Florida and Iowa and back-distribute it to the appropriate dates each week when the states’ reports are released. The data is back-distributed through August 10, 2021, and we are investigating if it is possible to go back further.

Iowa

  • On Sept. 13, 2021, the Johns Hopkins Coronavirus Resource Center (CRC) began to use data from the Centers for Disease Control and Prevention (CDC) for cases and deaths in Florida and Iowa. The CRC prefers to collect data directly from states and counties. But Florida and Iowa only report state data once per week, a cadence that has continually caused spikes and declines in cases and deaths in both states as well as in overall U.S. information. The CRC has elected to use the more-frequently updated state-level data collected by the CDC for Florida and Iowa and back-distribute it to the appropriate dates each week when the states’ reports are released. The data is back-distributed through August 10, 2021, and we are investigating if it is possible to go back further.

September 11, 2021

Florida

  • The data for September 10, 2021, includes the past week's worth of data from Florida. Florida only reports COVID-19 data once per week via their COVID-19 Weekly Situation Report, and does not provide a daily back-distribution of Case or Death data. While not all of Florida's Cases/Deaths were diagnosed/occurred on September 10, we are unable to break them out to dates within the week. This contributes to the unusually large number of daily cases for September 10 in the US.

United States

  • The data for September 10, 2021, includes the past week's worth of data from Florida. Florida only reports COVID-19 data once per week via their COVID-19 Weekly Situation Report, and does not provide a daily back-distribution of Case or Death data. While not all of Florida's Cases/Deaths were diagnosed/occurred on September 10, we are unable to break them out to dates within the week. This contributes to the unusually large number of daily cases for September 10 in the US.

September 4, 2021

Florida

  • The data for September 3, 2021, includes the past week's worth of data from Florida. Florida only reports COVID-19 data once per week via their COVID-19 Weekly Situation Report, and does not provide a daily back-distribution of Case or Death data. While not all of Florida's Cases/Deaths were diagnosed/occurred on September 3, we are unable to break them out to dates within the week. This contributes to the unusually large number of daily cases for September 3 in the US.

United States

  • The data for September 3, 2021, includes the past week's worth of data from Florida. Florida only reports COVID-19 data once per week via their COVID-19 Weekly Situation Report, and does not provide a daily back-distribution of Case or Death data. While not all of Florida's Cases/Deaths were diagnosed/occurred on September 3, we are unable to break them out to dates within the week. This contributes to the unusually large number of daily cases for September 3 in the US.

September 1, 2021

Missouri

  • Missouri has changed how the state reports tests, cases, and death data. Now that the City of Independence Health Department is fully managing its COVID-19 response, the Missouri Department of Health & Senior Services is now reporting the city’s data separately from Jackson County. The change removes approximately 12,000 total PCR cases, 2,500 Antigen cases, 200 Deaths, 100,000 PCR test and 41,000 Antigen tests out of the "Jackson County" category and into the newly created "City of Independence" category.

August 28, 2021

Florida

  • The data for August 27, 2021, includes the past week's worth of data from Florida. Florida only reports COVID-19 data once per week via their COVID-19 Weekly Situation Report, and does not provide a daily back-distribution of Case or Death data. While not all of Florida's Cases/Deaths were diagnosed/occurred on August 26, we are unable to break them out to dates within the week. This contributes to the unusually large number of daily cases for August 26 in the US.

United States

  • The data for August 27, 2021, includes the past week's worth of data from Florida. Florida only reports COVID-19 data once per week via their COVID-19 Weekly Situation Report, and does not provide a daily back-distribution of Case or Death data. While not all of Florida's Cases/Deaths were diagnosed/occurred on August 26, we are unable to break them out to dates within the week. This contributes to the unusually large number of daily cases for August 26 in the US.

August 26, 2021

Iowa

  • The seven-day average for Iowa's testing positivity rate cannot be calculated because the state has not reported any new tests in more than a week.