Feline panleukopenia (feline parvovirus) causes severe and rapidly fatal disease in cats, with devastating welfare impact when outbreaks occur in shelter environments.
Feline panleukopenia causes severe and rapid welfare deterioration in affected cats. Vomiting, bloody diarrhea, profound weakness, and high fever cause extreme distress. Bone marrow suppression reduces white cell production, leaving cats immunocompromised and susceptible to secondary bacterial infections that compound suffering. In shelter outbreaks, the rapid spread through shared facilities and the high mortality mean that many cats are euthanized to prevent further spread, representing both a welfare and population management crisis. Surviving cats require intensive nursing care over weeks, with significant welfare compromise throughout the recovery period.