What does case count mean?

The case count is the number of confirmed and probable cases of COVID-19 that have been reported in the county. A confirmed case is a person that has been diagnosed using a RT-PCR test (an accurate laboratory method). A probable case is a person that has been diagnosed using an antigen test for the SARS-CoV-2 virus that causes COVID-19 (not as accurate as RT-PCR, but a more rapid test). The South Dakota Department of Health website gives information on both confirmed and probable cases.

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1. Why is it called COVID-19?
2. What is community spread?
3. What does fully recovered mean?
4. What is community mitigation?
5. What is herd immunity?
6. What does case count mean?
7. What is a running average and why do we use them?
8. How do you calculate case fatality rates?
9. How is cause of death determined and coded?
10. What is misinformation?