Necropsy findings that would suggest Newcastle's disease and warrant reporting include which of the following?

Necropsy findings that would suggest Newcastle's disease and warrant reporting include which of the following?

• A. Plaques in trachea and air sacs
• B. Hemorrhages and edema in multiple systems
• C. Fluid in the brain
• D. Enlarged liver and spleen

Answer: (B)

The key idea is that virulent Newcastle disease causes widespread damage to blood vessels, leading to hemorrhages and edema in many body tissues. On necropsy, this pattern of multi-system hemorrhages and edema stands out as a strong indicator of virulent viral infection and would prompt immediate reporting to animal health authorities. Other findings like plaques in the trachea and air sacs can occur with other respiratory diseases, fluid in the brain is not as specifically linked to Newcastle disease, and an enlarged liver and spleen are nonspecific and can accompany many different illnesses. So the presence of hemorrhages and edema across multiple organ systems best fits the typical, report-worthy presentation of virulent Newcastle disease.

The key idea is that virulent Newcastle disease causes widespread damage to blood vessels, leading to hemorrhages and edema in many body tissues. On necropsy, this pattern of multi-system hemorrhages and edema stands out as a strong indicator of virulent viral infection and would prompt immediate reporting to animal health authorities. Other findings like plaques in the trachea and air sacs can occur with other respiratory diseases, fluid in the brain is not as specifically linked to Newcastle disease, and an enlarged liver and spleen are nonspecific and can accompany many different illnesses. So the presence of hemorrhages and edema across multiple organ systems best fits the typical, report-worthy presentation of virulent Newcastle disease.