What is Influenza?
Influenza also called flu is an acute viral respiratory infection, transmitted by the influenza virus. This virus has three main types A, B and C. Influenza A is classified into different subtypes. The currently circulating seasonal viruses are A (H1N1), influenza A (H3N2) and influenza B viruses. The flu viruses are typically in circulation in the winter months in South Africa with an average start of the first week of June, although this varies.
All specimens that are sent to the Centre for Respiratory Diseases and Meningitis for diagnostic testing are submitted together with a specimen submission form.
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