NOTE: On Thursday, Nov. 18, 2021, the Missouri Department of Health and Senior Services (DHSS) changed how it reports COVID-19 cases and deaths. The department began counting reinfections as new cases, and added epidemiologically linked cases to its counts.
On April 17, 2021, DHSS adjusted a database error that was causing individuals with both a positive PCR and antigen result to be counted as both a probable and confirmed case. This correction removed 11,454 cases that were counted twice in previous probable antigen cases, according the notation. That date’s data has been removed from this display.
Beginning March 8, 2021, DHSS began posting county-level data showing “probable” COVID-19 cases detected by antigen testing. Using the historical data from the DHSS dashboard, we reconfigured this graph to include that number in the total.
Missouri updated its data dashboard on Sept. 28. 2020, to delete duplicate cases. This resulted in a decrease of total cases which caused the daily count to reflect a negative number. That date’s data has been removed from this display.