Cover image

ON THE COVER: A vial of Dryvax(R) dried calf lymph type smallpox vaccine, which is reconstituted with a diluent prior to vaccination. Vaccinia (smallpox) vaccine, derived from calf lymph, and currently licensed in the United States, is a lyophilized, live-virus preparation of infectious vaccinia virus. It does not contain smallpox (variola) virus. Photograph courtesy of CDC/James Gathany, 2002 Description courtesy of CDC Source Library: PHIL The following are links associated with this image. CDC - Public Health Emergency Preparedness & Response Reports - Smallpox Vaccination CDC - National Immunization Program: Smallpox