Relatório de Estágio Curricular Supervisionado/Surto de meningoencefalite herpética em bovinos

Abstract

Herpetic meningoencephalitis in cattle is caused by bovine herpesvirus type 5 (BoHV-5) and bovine herpesvirus type 1 (BoHV-1). The disease is distributed worldwide, often affecting young animals under stress. This report describes a BoHV-5 meningoencephalitis outbreak in cattle raised extensively. In a herd of 250 10-month-old cattle, five animals fell ill and died. Clincal signs included apathy, salivation, nasal discharge, blindness, circling, sternal decubitus, and pleurothotonus. One necropsy was performed and leptomeningeal hyperemia was the only gross lesion. Histopathological features were necrotizing meningoencephalitis with basophilic intranuclear inclusions bodies in astrocytes and neurons. BoHV-5 genetic material was identified by quantitative polymerase chain reaction. Diagnosis of herpetic meningoencephalitis was based on epidemiological, clinical, pathological, and molecular findings.