how many of them had an existing underlying condition? the broad numbers suggest ~85% https://www.cdc.gov/mmwr/volumes/69/wr/mm6915e3.htm https://www.cdc.gov/mm

how many of them had an existing underlying condition? the broad numbers suggest ~85% https://www.cdc.gov/mmwr/volumes/69/wr/mm6915e3.htm https://www.cdc.gov/mmwr/volumes/69/wr/mm6915e3.htm