Key result
Among 6,000 patients with a history of anterior poliomyelitis, only 4 cases (0.067%) experienced a second attack of the disease.
Population
6,000 patients with poliomyelitis followed at the Harvard Infantile Paralysis Commission
Design
Case_series
Authors
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Recurrent poliomyelitis remains exceedingly rare; this Level 5 observation leaves open questions on immunity durability in survivors.
Observational (n=6,000)
Second attacks of anterior poliomyelitis are extremely rare, occurring in only 4 out of 6,000 cases.
Norman B. Nelson (1943) conducted an observational in Anterior poliomyelitis (n=6,000). Prior anterior poliomyelitis was evaluated on Second attack of anterior poliomyelitis. Among 6,000 patients with a history of anterior poliomyelitis, only 4 cases (0.067%) experienced a second attack of the disease.
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