Population
167 pedigreed vaccine-derived strains, 4 strains from 2 contacts of vaccinees, and 157 wild isolants from…
Design
Other
Authors
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Supports Sabin 2 stability in eradication programs; leaves open surveillance needs for rare vaccine-like wild strains.
The study establishes the stability of the antigenic character of the Sabin 2 vaccine strain upon passage in human intestinal tracts and the rare occurrence of vaccine-like wild strains in nature.
Nakano et al. (1970) studied this question.
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