On July 27, 2020, Negative PCR tests decreased by 148 for unclear reasons.
On August 27, the South Dakota Department of Health included cases from August 25 and 26 in their update due to a reporting aberration, resulting in a 343 case increase. They have provided historical case counts, and we are working to backfill our data.
As of September 18, 2020, South Dakota's total test results are drawn from our
totalTestsPeopleViral field instead of calculated via positive+negative.