serological status for chlamydophila psittaci, newcastle disease virus, avian polyoma virus, and pacheco disease virus in scarlet macaws (ara macao) kept in captivity in costa rica.from 1998 to 1999, a total of 128 blood samples were collected from scarlet macaws (ara macao), kept in captivity in 11 different aviaries located in six provinces of costa rica. the sera were examined for antibodies directed against chlamydophila psittaci, newcastle disease virus (ndv), avian polyoma virus (apv), and pacheco disease virus (pdv). testing by enzyme-linked immunosorbent assay (elisa), showed 16 (12.39%) of the samples (n = 129) exhibited antibodies directed against c. psittaci. em ...200111846016
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