Examples of use of smallpox
1. The currently licensed smallpox vaccine consists of a live but weakened strain of vaccinia virus, a relative of the variola virus that causes smallpox.
2. Health care providers currently treat smallpox vaccine complications with anti–vaccinia immune globulin (VIG) –– pooled antibodies taken from the blood of individuals immunized with the smallpox vaccine.
3. Mouse pox doesn‘t affect humans, but smallpox does.
4. All smallpox vaccines contain a weakened virus, called vaccinia virus, that is closely related to smallpox but much less likely to cause illness.
5. Forty years ago smallpox killed up to 2 million people, by 1'80 the world was declared smallpox–free by the World Health Organisation.