01 / The world before
Smallpox was a deadly disease across societies.
02 / The discovery
Vaccination, surveillance and containment led to global eradication, declared in 1980.
03 / The people
Jenner's early vaccine, national health systems and international teams.
04 / The obstacles
The last cases demanded difficult surveillance and cooperation.
05 / The world after
A human infectious disease was eradicated worldwide.
06 / Why it still matters
It shows that science and public systems must work together.