B03

Note

• In 1980 the 33rd World Health Assembly declared that smallpox had been eradicated.

• The classification is maintained for surveillance purposes.

Clinical Information

• An acute, highly contagious, often fatal infectious disease caused by an orthopoxvirus characterized by a biphasic febrile course and distinctive progressive skin eruptions. Vaccination has succeeded in eradicating smallpox worldwide. Dorland, 28th ed)

• Smallpox is a disease caused by the