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To invettigate the possibility of poliovirus persistence in patients with the postpolio syndrome,we examined skeletal muscle biopsy specimens, cerebrospinal fluid specimens,and sera for the presence of poliovirus RNA by the polymerase chain reaction,and for IgM antibodies by a poliovirus type-specific IgM antibody-capture enzyme-linked immunosorbent assay.In none of these specimens was poliovirus RNA or a poliovirus type-specific IgM response detected.These results argue against the hypothesis that poliovirus persists in patients with the postpolio syndrome and plays a role in the pathogenesis of the postpolio syndrome. |
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