Vaccinum Poliomyelitidis - Per Orale - Typus I, II, III Sabin - (Oral Polio Vaccine -Type I, II, III Sabin) | National Museum of American History
Vaccinum Poliomyelitidis - Per Orale - Typus I, II, III Sabin - (Oral Polio Vaccine -Type I, II, III Sabin) | National Museum of American History
![Hidden enemy: Emerging form of poliovirus threatens hopes for eradication | News Center | Stanford Medicine Hidden enemy: Emerging form of poliovirus threatens hopes for eradication | News Center | Stanford Medicine](http://med.stanford.edu/content/dam/sm-news/images/2015/04/polio-oral.jpg)