Epidemiological features and the neuropathological manifestations of canine distemper virus-induced infections in Brazil: a review

This review provides a critical review of current epidemiological trends of canine distemper virus (CDV) and syndromes related to canine distemper encephalitis (CDE) with specific reference to the situation in Brazil. Epidemiological data relative to susceptible animal populations, prevalence, seasonal occurrence, and age-related patterns associated with CDV are discussed. The participation of mongrel dogs in maintaining CDV within rural and semi-urban canine populations and their importance in the epidemiology of canine distemper is highlighted. The economic impact of treating the clinical manifestations associated with CDV-induced infections in Brazil is estimated. Additionally, neurological and neuropathological manifestations of CDV in Brazil are discussed, and a novel manifestation of CDE is proposed.