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Poliomyelitis, Paralytic
1990 Case Definition

Clinical Description

Acute onset of a flaccid paralysis of one or more limbs with decreased or absent tendon reflexes in the affected limbs, without other apparent cause, and without sensory or cognitive loss (as reported by a physician)

Case Classification

Probable

A case that meets the clinical case definition

Confirmed

A case that meets the clinical case definition and in which the patient has a neurologic deficit 60 days after onset of initial symptoms, has died, or has unknown follow-up status

Comments

All suspected cases of paralytic poliomyelitis are reviewed by a panel of expert consultants before final classification occurs. Only confirmed cases are included in Table I in the Morbidity and Mortality Weekly Report (MMWR). Suspected cases are enumerated in a footnote to the MMWR table.



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