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JAMA. 1930;95(12):876. doi:10.1001/jama.1930.02720120044021.
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Parrots in Brazil in Relation to Psittacosis  Drs. G. Pacheco and O. Bier stated before the Sociedad de Biologia of São Paulo that the development of psittacosis among native parrots in Brazil may be explained, possibly as being due to the exacerbation of a disease existing in them in an attenuated form. Last year an epizootic similar to psittacosis developed in an aviary of the Bureau of Animal Industries. Bacteria isolated from the sick animals had many characteristics of Nocard's bacillus but had also some different characteristics, indicating that it was of the same type of bacillus but was not Nocard's bacillus itself. Nocard's bacillus was isolated, however, from two sick parrots which were not connected with the epizootic mentioned. A filtrable virus was isolated from these birds, which, when used in concentrated solutions, reproduced the disease in other parrots. However, contrary to observations made with the viruses isolated from


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