WHO smallpox eradication (1980)
WHO's intensified smallpox eradication program coordinated mass vaccination across more than 50 countries, ending in the disease's certified eradication in 1980—the only human disease ever fully eliminated.
Smallpox transmission ceased, ending an estimated 300 million deaths the disease had caused in the 20th century alone.
The campaign established the playbook for vaccine-led disease elimination: clear targets, coordinated international financing, and country-level execution backed by global technical guidance.
WHO's 90-70-90 framework borrows directly from the smallpox model. Cervical cancer cannot be eradicated like smallpox—HPV will keep circulating—but the disease it causes can be driven below epidemiological significance using the same combination of vaccination, surveillance, and global coordination.
