“Vaccination has made smallpox extinct in the wild, as well as rinderpest, a relative of measles that affects cattle and buffalo, among others. Poliomyelitis, which has in its heyday killed and maimed millions of children and adults alike, is close… — Chris von Csefalvay Copy Share Image
“Vaccination has made smallpox extinct in the wild, as well as rinderpest, a relative of measles that affects cattle and buffalo, among others. Poliomyelitis,… — Chris von Csefalvay Copy Share Image
