Published in Medical Letter on the CDC and FDA, August 20th, 2006
According to the report from England, "Seven cases of long-term poliovirus excretion in the U.K. and Ireland are reviewed in this paper. They include a rare case of long-term virus excretion by a healthy child recently found in Ireland and the case with the longest period of vaccine-derived poliovirus excretion by an immunodeficient individual ever known, 18 years."
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