Herd immunity contributed to the eradication of which infectious disease in 1980?
Correct answer: Smallpox
Jozzie1974
Yay for immunizations. Everybody should get them. Keeping the world safe 1 person at a time!
TonyK
Well that's a topical question
ThePurplePrincess
Wow... amazing what our bodies can cope with/fight off.
Player #52076701
Any anti vaxxers playing this game?
baymax
TonyK, very!!