2 ms·
This covers both your and OP's questions pretty well: https://www.cdc.gov/nchs/nvss/vsrr/covid_weekly/index.htm https://www.cdc.gov/nchs/nvss/vsrr/covid_weekly
by umvi 6y ago
This covers both your and OP's questions pretty well:
https://www.cdc.gov/nchs/nvss/vsrr/covid_weekly/index.htm https://www.cdc.gov/nchs/nvss/vsrr/covid_weekly/index.htm