| [role of passerine birds in the ecology of influenza viruses]. | a total of 267 passerine birds distributed among 37 species were netted during spring 1980 and summer 1981 in the laurentian and montreal areas. all the cloacal swabs collected at that time wer free of influenza viruses. three and five days after oral administration of avian or human influenza a virus strains, 108 isolates were obtained from 42 of 134 passerine birds. positive samples were recovered mainly from the respiratory and the digestive tract and also from liver. spleen and kidneys. vira ... | 1983 | 6683860 |