Cohort Study of Bovine Malignant Catarrhal Fever in Cavery Delta Districts of Tamil Nadu

Abstract

An 18 months old crossbred Holstein Friesian heifer was referred to the Large animal Medicine Referral clinic of the Veterinary College and Research Institute, Orathanadu, Tamilnadu. India. Upon Clinical examination it had pyrexia (41.5 ℃), highly enlarged pre scapular lymph nodes and bilateral corneal opacity. Systemic examination was unremarkable. Clinical samples like whole blood in EDTA, clotted blood in serum activator tubes and peripheral blood smears were collected and analyzed. Clinical samples were also collected from co -habituating sheep population where the affected cattle were reared. Complete blood count, biochemical tests and blood protozoan screening were done. Data like geolocation, season and farming details were collected and analyzed (Figure 1).