Pseudorabies affects which systems in the body?

Pseudorabies, also known as Aujeszky's disease, primarily affects the nervous and respiratory systems of infected animals. The virus responsible for this disease is particularly notable for causing neurological symptoms, which can manifest as signs of nervous system involvement such as tremors, seizures, and paralysis. In addition to these symptoms, the respiratory system is significantly impacted, leading to difficulties in breathing, coughing, and nasal discharge.

The disease is caused by a herpesvirus, which is known to create significant stress on an animal's respiratory functions while also influencing neurological health. This is why the correct choice emphasizes the nervous and respiratory systems as the primary regions affected by pseudorabies. Infected animals often display a range of symptoms reflecting these systems' involvement, confirming their critical role in the disease's pathology.