Appropriate Tests


Influenza A or B infection.

For rapid diagnosis, Influenza Ag.

If clinically severe and if the diagnosis is uncertain: Influenza Ab.

If a new epidemic is suspected: Virus detection, culture - sputum, throat gargle, Throat swab or nasopharyngeal swab/aspirate.

Viral isolation early in the course of an epidemic may help achieve prompt control in the community (immunisation, prophylaxis).

Parainfluenza infection

Viral swab from nasopharynx for PCR detection.

Bacterial pneumonia, especially

  • Streptococcus pneumoniae
  • Staphylococcus aureus
  • Streptococcus pyogenes
Blood culture, Full blood count, Urea, Electrolytes, Glucose, and consider sputum for culture, respiratory virus PCR and serology.

See Guideline on Pathology testing in the Emergency department: Appendix 2.

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