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Journal of Veterinary Diagnostic Investigation, Vol 15, Issue 6, 574-576
Copyright © 2003 by American Association of Veterinary Laboratory Diagnosticians

Case Reports

A case of yellow fever in a brown howler (Alouatta fusca) in Southern Brazil

ES Sallis, VL de Barros, SL Garmatz, RA Fighera, and DL Graca

Departamento de Patologia, Universidade Federal de Santa Maria, 97105-900 Santa Maria, Brazil.

Many brown howlers (Alouatta fusca) have died in a 3-month period in a subtropical forest in Southern Brazil. One was examined after a systemic illness. According to clinical signs, and necropsy and histopathology findings, yellow fever virus (YFV) infection was suspected. Tissue sections from liver, kidney, and lymphoid organs were screened by immunohistochemistry for YFV antigens. Cells within those tissues stained positively with a polyclonal antibody against YFV antigens (1:1,600 dilution), and yellow fever was diagnosed for the first time in the brown howler in the area.




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