The Smallpox Vaccine

The smallpox vaccine:

A) Is not actually made from the smallpox virus, but rather from the vaccinia virus
B) Is most likely to cause side effects in people with a history of eczema or skin allergies
C) Can spread from the initial site of vaccination by autoinoculation to other parts of the skin
D) Should be administered to anyone exposed to smallpox, regardless of his or her health status