| | | | | Vertebrate (species and organ) and arthropod | No. isolations/No. tested | No. with antibody/No. tested Test used | Country and region |
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| | NT antibody found in wild birds (3,198 tested) collected in Texas, Mississippi, Tennessee, Ohio, Indiana, Illnois and Wisconsin; not in those collected in Kentucky and Missouri (2). | | | | Progne subis subis | 1 | | S. Illinois, July 1964 | | Cyanocitta cristata cristata | 1 | | S. Illinois, Sept. 1964 | | Hylocichla ustulata swainsoni | 1 | | S. Illinois, Sept. 1965 | | Agelaius phoeniceus phoeniceus | 1 | | S. Illinois, May 1964 | | Richmondena cardinalis (cardinal) | 1/48 | | Dallas, Texas, August 1966 | | Other wild birds | 0/632 | | Dallas, Texas, Aug.-Sept. 1966 | | Culex restuans | 1 | | Memphis, Tennessee(3) | | Culex pipiens | 1 | | |
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