3 ms·
Looking at it now, I see I forgot a "k". It was 350k in 1988, not 350. [0] [0] https://www.cdc.gov/polio/progress/index.htm https://www.cdc.gov/polio/progress/
by modriano 5y ago
Looking at it now, I see I forgot a "k". It was 350k in 1988, not 350. [0]
[0] https://www.cdc.gov/polio/progress/index.htm https://www.cdc.gov/polio/progress/index.htm