Integrated Program for the
Eradication of Poliomyelitis in Macau
Surveillance Case Definitions
Standard definition of AFP case:
Any case of Acute Flaccid Paralysis in a child under 15 years of age,
including those considered to be Guillan-Barre Syndrome;
This definition also includes any suspected case of poliomyelitis,
transverse myelitis, traumatic neuritis, Pott’s disease, TB meningitis, all other
forms of meningitis, osteomyelitis, hypotonia or hypokalemic paralysis.
Clinical case definition of poliomyelitis (as reported by a physician):
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.
Probable case of poliomyelitis:
A case that meets the clinical case definition, without isolation of poliovirus from laboratory specimens.
Confirmed case of poliomyelitis:
A case that meets the clinical case
definition and in which the patient has a neurologic deficit sixty (60) days after onset of initial symptoms,
has died, or has unknown follow-up status; or
A case that meets the clinical case
definition and is associated with the isolation of wild or vaccine
poliovirus from a clinical / laboratory specimen.
Categories of poliomyelitis cases:
indigenous: a case that cannot
be proved to be imported; and
imported: a case which has its
source outside Macau. A person with poliomyelitis (Macau
resident or other) who has entered the territory and had onset
of illness within thirty (30)
days before or after entry.
recipient: the illness began
7-30 days after receiving OPV;
contact: the patient was shown
to have been in contact with a vaccinee and became ill 7-60 days after the vaccinee
received OPV; and
immunocompromised: diagnosis of
a concurrent medical condition associated with deficient immune function in any
vaccine-associated case.
© Fernando Costa Silva, 1999
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