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Review
. 2016 Jul 29:21:51.
doi: 10.4103/1735-1995.187253. eCollection 2016.

The avian influenza H9N2 at avian-human interface: A possible risk for the future pandemics

Shaghayegh RahimiRad  1 , Ali Alizadeh  2 , Effat Alizadeh  3 , Seyyed Masoud Hosseini  4
Affiliations
Review

The avian influenza H9N2 at avian-human interface: A possible risk for the future pandemics

Shaghayegh RahimiRad et al. J Res Med Sci. .

Abstract

The avian influenza subtype H9N2 is considered a low pathogenic virus which is endemic in domestic poultry of a majority of Asian countries. Many reports of seropositivity in occupationally poultry-exposed workers and a number of confirmed human infections with an H9N2 subtype of avian influenza have been documented up to now. Recently, the human infections with both H7N9 and H10N8 viruses highlighted that H9N2 has a great potential for taking a part in the emergence of new human-infecting viruses. This review aimed at discussing the great potential of H9N2 virus which is circulating at avian-human interface, for cross-species transmission, contribution in the production of new reassortants and emergence of new pandemic subtypes. An intensified surveillance is needed for controlling the future risks which would be created by H9N2 circulation at avian-human interfaces.

Keywords: Avian influenza; H9N2; future pandemics; human infection; human interface; reassortment potential.

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Figures

Figure 1
Figure 1
Antigenic shift of influenza viruses. Occupationally exposed workers may act as mixing host for emergence of novel influenza reassortants
See this image and copyright information in PMC

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