This is a disease that was wiped out in 2000. Thanks, anti-vaxxers!
The virus played its part in decimating Native American populations during the age of discovery.
I have a lot of friends who don't get the shot; myself, I've gotten it faithfully for the past ten years, ever since I was unemployed, uninsured, got the flu and it turned into pneumonia. There's nothing like lying in bed, shaking with fever