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The COVID Tracking Project will stop collecting data on March 7, 2021.

Missouri Overview

Data Reporting Assessment (Learn more about data quality assessments)

Last updated

When Missouri reports no data, several days of data, or unusual data (such as decreases in values that should increase), our volunteers note it here on the date the anomaly occurred. We also note here changes in our own methodology that affect the data.

Negative test results reported in our API and CSVs are calculated by subtracting Confirmed cases from Total PCR tests (people).

On November 21, 2020, Missouri’s Total PCR Tests (People) increased by less than Confirmed cases. As a result, Negative (People or Cases) saw a decline from the previous day since it is calculated by subtracting Confirmed cases from Total PCR tests (people).

On November 10, 2020, Missouri’s Total PCR tests (specimens), Negative PCR tests (specimens), Total PCR tests (people), Total antibody tests (specimens), Total antibody tests (people), Negative antibody tests (specimens), Total antigen tests (specimens), and Negative antigen tests (specimens) dropped without explanation.

On November 8, 2020, Missouri's Total PCR Tests (specimens) decreased from 2,672,288 to 2,654,691 with no explanation.

On October 14, 2020, Missouri testing numbers by people decreased. This resulted in a decrease in all total testing numbers (people) and negative cases. Testing numbers by specimen are unaffected.

On October 11, 2020, Missouri announced that a database error had resulted in an “incorrect inflation” of cases in its October 10, 2020 report. When The COVID Tracking Project is able to obtain correct official data for October 10 from Missouri, we will update our dataset to reflect the correction.

On October 8, 2020, Missouri added current hospitalizations to their COVID-19 dashboard, and we began to capture this metric. Historical data is also available and we are working on backfilling our data for days where this metric was unavailable.

As of October 7, 2020, Missouri's total test results are drawn from our totalTestsViral field instead of calculated via positive+negative. The number of unique people tested is available in our API as totalTestsPeopleViral.

On September 28, 2020, Missouri removed the Positive and Negative antibody tests (people) metrics from their dashboards. Due to this we cannot continue reporting Positive antibody tests (people) and Negative antibody tests (people), however the time series for these metrics are available in the historical data, and our data downloads.

On September 5, 2020, the Missouri DHSS added an additional 72 deaths to their total count, "most of which occurred June-August".

As of May 22, 2020, Missouri reports PCR tests separately from antibody tests.