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Updated: Sep 27, 2026

Rapid Diagnosis of Avian Influenza Virus in Wild Birds: Use of a Portable rRT-PCR and Freeze-dried Reagents in the Field
Published on: August 2, 2011
[Discovery of men infected by avian influenza A (H9N2) virus]
1China National Influenza Center, Institute of Virology, Chinese Academy of Preventive Medicine, Beijing 100052.
Objective:
To understand whether the avian influenza A(H9N2) virus can infect men or not.
Methods:
Seroepidemiological surveys for avian (H9N2) virus in human, chickens and pigs were conducted. The specimens for viral isolation were taken from throat of patients with influenza like disease, as well as from chickens, then the specimens were inoculated into embryonated chicken eggs. Afterward, the idsolates were identified with HI and NI tests. Meanwhile, the patients who would be studied individually were found to carry H9N2 virus.
Results:
Approximately 19% of human had antibody to H9N2 virus with HI titers > or = 20, 5 strains of influenza A (H9N2) virus were isolated from the patients.
Conclusion:
Avian influenza A(H9N2) virus can infect men.
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