Polio History, Vaccination Other Contributor 2/9/10 Polio History, Vaccination Other Contributor 2/9/10 This Day in History: February 23, 1954 - Children Receive First Polio Vaccine Read More
Polio History, Vaccination Other Contributor 2/9/10 Polio History, Vaccination Other Contributor 2/9/10 This Day in History: February 23, 1954 - Children Receive First Polio Vaccine Read More