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.

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_guidance_ridt.htm http://www.cdc.gov/flu/professionals/diagnosis/clinician_gui...