Polio Outbreak Raises Questions About Vaccine
- 8 December 2000
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 290 (5498) , 1867-1869
- https://doi.org/10.1126/science.290.5498.1867b
Abstract
A small cluster of polio cases in the Dominican Republic and Haiti marks both the first polio outbreak in the Western Hemisphere in more than 9 years and the first reliable report that a vaccine-derived polio strain may have reverted to a virulent form and spread contagiously. Although a massive vaccination campaign already in the works is expected to contain the outbreak, the unusual incident raises troubling questions about a vaccine that has been in widespread use for nearly 40 years.Keywords
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