HEALTH

A Disease Driven Extinct

1980 CE

History · Contemporary · Holocene · Meghalayan

On 8 May 1980, the World Health Assembly declared smallpox eradicated: the last natural case had been a hospital cook in Somalia in 1977. A disease that killed hundreds of millions in its final century was hunted down by a global campaign that, where mass vaccination alone fell short, turned to surveillance and containment: house-to-house searches, rewards for reporting a case, a ring of vaccination around each one.

Why it matters

Once, and so far only once, our species deliberately drove a disease extinct. It took a Cold War world agreeing on one thing, field teams in more than thirty countries where smallpox was still endemic, and a strategy smarter than brute force. What that campaign achieved sets the standard for coordinated public health, and every eradication effort since has been read against it, for its lessons and for its difficulty.

Dating & uncertainty

The World Health Assembly certified eradication on 8 May 1980, about two and a half years after the last natural case, diagnosed in Somalia in 1977. Smallpox remains the only human disease eradicated, and the method that finished it was not mass vaccination alone but surveillance and ring containment.

Sources

1. Strassburg (1982), American Journal of Infection Control · The global eradication of smallpoxdoi:10.1016/0196-6553(82)90003-7
2. Bhattacharya & Dasgupta (2009), American Journal of Public Health · A tale of two global health programs: smallpox eradication’s lessons for the antipolio campaign in Indiadoi:10.2105/ajph.2008.135624
3. Riedel (2005), Baylor University Medical Center Proceedings · Edward Jenner and the history of smallpox and vaccinationdoi:10.1080/08998280.2005.11928028

Our species’ history as one day

23:59:4712.6 s before midnight

if the 315,000 years of Homo sapiens were compressed into a single day