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Official Journal of the Australasian College for Infection Prevention and Control
RESEARCH ARTICLE

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Australian Infection Control 12(1) 26 - 28
Published: 2007

Abstract

Three types of influenza viruses have been identified: Types A, B and C. Only A and B cause human disease, and only type A causes pandemics. Influenza A viruses are characterised by two surface antigens, haemagglutinin (H) and neuraminidase (N), of which there are sixteen H subtypes and nine N subtypes. Only viruses of the H5 and H7 subtypes are known to cause the highly pathogenic form of influenza.

https://doi.org/10.1071/HI07026

© Australian Infection Control Association 2007

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