Why Some Polio Immunizations Fails

Fighting Polio

Read about Dr. Jonas Salk's vaccine and see a timeline of the fight against polio.

Fifty years ago after the development of a polio vaccine, the World Health Organization is still trying to eradicate the disease. But there are doubts that mass immunization campaigns are the most effective approach. In the second story in a series marking the polio vaccine anniversary, a look at why some polio immunization programs fail.



Please keep your community civil. All comments must follow the NPR.org Community rules and terms of use, and will be moderated prior to posting. NPR reserves the right to use the comments we receive, in whole or in part, and to use the commenter's name and location, in any medium. See also the Terms of Use, Privacy Policy and Community FAQ.