Tested positive for the flu? I've never heard of anyone getting tested for it given it lasts for such a short period of time.
Is this a common thing?
Possibly relevant: Australian.
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Yes it is pretty common in the US at least, a nasal/throat swab is taken for a rapid influenza A/B screen- and if positive can be confirmed by PCR.
http://www.cdc.gov/flu/professionals/diagnosis/clinician_gui...