Edward Jenner used cowpox to protect against smallpox. Global vaccination led to complete eradication.
Salk and Sabin vaccines reduced polio by 99%. Remains endemic in only 2 countries.
DDT spraying initially succeeded but resistance and funding gaps caused resurgence. Still a major killer.
3.5 million cases reduced to just a handful through clean water and education. No vaccine exists.
mRNA vaccines developed in under a year. Demonstrated power of global scientific collaboration.
Click any timeline event to see lessons learned about disease control and eradication.