Population
A healthy child immunized with oral live polio vaccine (n=1)
Design
Case_report
Follow-up
10 months
Authors
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Prolonged VDPV excretion may occur despite normal immunity; hypothesis-generating for poliovirus surveillance in healthy children.
A healthy child with normal humoral immunity can excrete vaccine-derived poliovirus for an extended period, with viral mutations leading to reversion to wild-type properties.
Martín et al. (2004) studied this question.
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