After three years of around-the-clock tracking of COVID-19 data from...
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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On March 1, 2022, Iowa showed a case spike. This is presumed to be from a backlog, per this source: https://www.desmoinesregister.com/story/news/health/2022/03/02/iowa-covid-19-hospitalizations-continue-decline-cases-weekly-update/6896213001/
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.
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.
We detected an anomaly in our data source's reported total tests for Iowa on October 16. As a result, we have excluded that date's data from our 7-day rolling averages.