Influenza A & B Serology tested.
For retrospective diagnosis only.
For the diagnosis of acute infection, send appropriate respiratory sample for PCR testing.
Store acute serum. Send paired acute and convalescent samples only.
Acute samples will be stored. Testing will only be performed on paired acute and convalescent samples collected at least 2 weeks apart.
For diagnosis of acute influenza, send a sample for Respiratory PCR testing.