AI Article Synopsis
- The study focused on identifying causes of mortality in American crows that are not related to West Nile virus, as all tested crows were negative for the virus.
- Common findings from the necropsies included external trauma, liver and spleen enlargement, skin lesions from poxvirus, and pneumonia.
- Significant health issues found in the crows were fungal pneumonia and lesions associated with poxvirus, contributing to a better understanding of diseases affecting this bird population.
Article Abstract
The American crow (Corvus brachyrhynchos) is a common urban and rural inhabitant of the Northeast and Midwest United States that is commonly infected with West Nile virus (WNV). The current study was initiated to determine non-WNV-associated causes of mortality in the American crow. All animals (40/40) tested negative for WNV infection via polymerase chain reaction and had no evidence of infection based on immunohistochemistry. Common gross necropsy findings included external trauma (6/40), hepatosplenomegaly (6/40), poxviral dermatitis (5/40), and pneumonia (3/40). Common histologic findings included endoparasitism (32/40), multifocal hepatic and splenic necrosis (7/40), pigment accumulation in the spleen (5/40), and disseminated bacterial infection (3/40). The most significant and debilitating diseases included fungal pneumonia and poxvirus-associated lesions. The present report increases the knowledge of diseases present in the American crow population.
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| http://dx.doi.org/10.1177/104063871002200223 | DOI Listing |
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