Malignant catarrhal fever: pathogenesis, problems of prevention and control (review)

Abstract

Malignant catarrhal fever is a non-contagious infectious disease that occurs sporadically in the population of cattle and wild artiodactyls. The source of the causative agent of the disease is wildebeest, sheep, and goats, in which the infectious process is usually asymptomatic. The manifestation of clinical and pathological signs is variable, often characterized by damage to the nervous, respiratory and digestive systems, in the organs and tissues of which signs of lymphocytic and histiocytic vasculitis are noted. Diagnosis of the disease is carried out comprehensively using clinical and histological methods, but the main method is the detection of viral DNA in the material using PCR. However, control and prevention of the disease have a number of difficulties due to insufficient efficiency of diagnostic measures, lack of vaccines and outdated regulatory framework. There are no commercially available kits for diagnosing the disease in Russia. This diagnosis is available to research organizations, where complex research protocols are used. Due to insufficient knowledge of the pathogenesis, attempts to create effective vaccines against malignant catarrhal fever have not yet been successful, which does not allow for the full implementation of preventive measures. Regulatory acts defining approaches to control and elimination of the disease have not been updated for more than 20 years. The complex of these problems significantly distorts the objective epizootic situation on malignant catarrhal fever and contributes to its hidden spread with unclear economic and economic damage.