'Developed by Edward Jenner, the first true vaccine was designed to protect against this disease'
Smallpox
SCIENCE: Developed by Edward Jenner, the first true vaccine was designed to protect against this disease
Developed by Edward Jenner, the first true vaccine was designed to protect against this disease
Developed by Jenner, the first true vaccine was designed to protect against this disease
SCIENCE
Smallpox
SCIENCE