Last updated: Friday, 06, August, 2010
Influenza A or B infection
For rapid diagnosis, influenza virus antigen.
If clinically severe and if the diagnosis is uncertain: influenza virus antibodies.
If a new epidemic is suspected: virus detection, culture - sputum, throat gargle, throat swab or nasopharyngeal aspirate.
Viral isolation early in the course of an epidemic may help achieve prompt control in the community (immunisation, prophylaxis).
Bacterial pneumonia, especially