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Type-A Influenza Viruses Isolated from Wild Free-Flying Ducks in California

Richard D. Slemons, Daryle C. Johnson, John S. Osborn and Frank Hayes
Avian Diseases
Vol. 18, No. 1 (Jan. - Mar., 1974), pp. 119-124
DOI: 10.2307/1589250
Stable URL: http://www.jstor.org/stable/1589250
Page Count: 6
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Type-A Influenza Viruses Isolated from Wild Free-Flying Ducks in California
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Abstract

From 6 October 1972 to 3 December 1972, 41 type-A influenza virus isolants were recovered from free-flying wild ducks, and 7 isolants from domestic ducks in southern California. The type-specific antigen (ribonucleoprotein) was identified by the agar-gel-diffusion test, and tentative identification of one strain-specific antigen (hemagglutinin) was attempted by the hemagglutination-inhibition test. These isolants support the theories that wild birds play an important role in the dissemination of type-A influenza viruses and may provide optimum conditions for genetic interaction of type-A influenza viruses, resulting in new hybrid strains.

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