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Vol. 11, No. 1, 1979
Issue release date: 1979
Intervirology 1979;11:9–15
Original Paper

Geographical Distribution of Swine (Hsw1N1) and Hong Kong (H3N2) Influenza Virus Variants in Pigs in Southeast Asia

Shortridge K.F. · Webster R.G.
Department of Microbiology, University of Hong Kong, Hong Kong, and Division of Virology, St. Jude Children’s Research Hospital, Memphis, Tenn.


Influenza viruses of the Hsw1N1 and H3N2 subtypes were isolated in Hong Kong from pigs originating from Hong Kong, People’s Republic of China (PRC), Singapore, and Taiwan. The H3N2 isolates were from pigs from Hong Kong and PRC, whereas the HswlNl isolates were from pigs from Hong Kong, PRC, Singapore and Taiwan. The hemagglutinins of the H3N2 isolates were similar to those of the earlier A/Hong Kong/1/68 and A/Port Chalmers/ 1/73 variants from man. The Hsw1N1 isolates were similar to the human A/New Jersey/8/76 virus. These studies extend the geographical range of Hsw1N1 influenza virus and suggest that pigs in southeast Asia, like those in North America, harbor Hsw1N1 influenza viruses. These findings underline the importance of pigs as potential reservoirs for future human pandemics by the continued isolation (in Asia) of H3N2 and HswlNl influenza viruses.

 goto top of outline Author Contacts

Address inquiries to: Dr. Kennedy F. Shortridge, Department of Microbiology, University of Hong Kong, Pathology Building, Queen Mary Hospital Compound (Hong Kong)

 goto top of outline Article Information

Received: January 31, 1978
Revised: March 21, 1978
Published online: July 23, 2008
Number of Print Pages : 7

 goto top of outline Publication Details

Intervirology (International Journal of Basic and Medical Virology)

Vol. 11, No. 1, Year 1979 (Cover Date: 1979)

Journal Editor: Liebert U.G. (Leipzig)
ISSN: 0300–5526 (Print), eISSN: 1423–0100 (Online)

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