Table 3.

Smallpox Certification Activities in 200 Countries, 1977–1980^a

Countries by Category	Countries, No.	Population (Billions)
Total	200	4.5
Submitting statements	121	1.5
Visited by commissions	79	3.0
At special risk	44	1.8
Endemic during smallpox eradication programs	35	1.2

^aA total of 17 000 specimens were collected.