Background
An adult male Brachyteles arachanoides, kept in captivity since 1990, was found dead without apparent clinical evidence.
Conclusions
Muriquis are susceptible to RSV pneumonia followed by respiratory distress syndrome and death.
Methods
Necropsy report, histopathology, immunohistochemistry, and ultrastructural examination were conducted.
Results
Pulmonary syncytial cells were positive for respiratory syncytial virus (RSV), and ultrastructural examination revealed viral particles inside macrophages compatible with the Paramyxoviridae family. Conclusions: Muriquis are susceptible to RSV pneumonia followed by respiratory distress syndrome and death.