View Single Post
Old 02-18-2022, 08:50 PM   #197
John Mercier
Senior Member
 
Join Date: Jun 2021
Posts: 2,973
Thanks: 2
Thanked 529 Times in 435 Posts
Default

That happens a lot.
For small pox the US continued to vaccinate almost the entire population until roughly 20 years after the last case in the US.
It took a long time to rid the rest of the world of it.
John Mercier is offline