Abstract

From 1 January 1972 to 22 July 1972, 15 type-A influenza viruses were identified from 15 cases involving 12 different species of exotic birds being imported into southern California from outside the United States and some that had already been distributed to several locations there. The type-specific antigen (ribonucleoprotein) was identified by the agar-gel-diffusion test, and tentative identification of one strain-specific antigen (hemagglutinin) was made by the hemagglutination-inhibition test. All isolates were inhibited by antiserum against A/mynah bird/Mass./71 (Hav4 Neq2), and all but two were inhibited by antiserum against A/duck/England/56 (Hav3 Navl).

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