Progression of smallpox in humans

Smallpox, Day 1Smallpox, Day 2

Day 1
 

Day 2

Smallpox, Day 3Smallpox, Day 4

Day 3
 

Day 4

Smallpox, Day 5Smallpox, Day 6

Day 5
 

Day 6

Smallpox, Day 7Smallpox, Day 8

Day 7
 

Day 8

Smallpox, Day 9Smallpox, Day 13

Day 9
 

Day 13

Source: Fenner F, Henderson DA, Arita I, et al. Smallpox and Its Eradication. Geneva, Switzerland: World Health Organization; 1988. Courtesy of DA Henderson.