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Clinical criteria
Any person with one of the
following:
• Fever >38oC OR history of fever
AND flu-like illness (two or more of
the following symptoms: cough,
headache, rhinorrhea or vomiting/diarrhoea)
• Other severe/life-threatening
illness suggestive of an infectious
process
Epidemiological criteria
At least one of the following in a
person during the seven days before
onset of illness:
• Close contact with a confirmed or
probable case of swine flu A (H1N1)
virus infection while the
case-contact was ill or in the 24
hours before illness onset
• Traveled to a geographical area
known to have confirmed cases of
swine influenza A/H1N1
Case classification:
A. Possible case
Any person meeting the clinical
and epidemiological criteria
B. Probable case
Any person meeting the clinical and
epidemiological criteria AND with a
positive influenza rapid testing
C. Confirmed case
Any person with laboratory
confirmation (not yet available in
Qatar but is expected within 4-6
weeks)
D. Discarded case
Any suspect case not fulfilling the
possible case definition or a
possible case if the laboratory
result is negative
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