Obtaining components of a test system based on a competitive elisa for the detection of antibodies to the rabies virus

Introduction. The main approach to the rabies prevention is the vaccination of domestic and wild carnivores. For the routine evaluation the anti-rabies vaccination effectiveness, World Organization for Animal Health (OIE) recommends various enzyme-linked immunosorbent assays (ELISA).The aim of the study was to design and validate a competitive ELISA (cELISA) test system for the detection of antibodies to the rabies virus (RABV).Materials and methods. The development of the cELISA was carried out following the OIE recommendations.Results. The repeatability of the cELISA results within one laboratory was satisfactory (coefficient of variation 7.95–13.61%). The coefficient of determination (CD) between the results of the virus neutralization reaction (FAVN) and cELISA was 0.988, p < 0.001. The lower threshold for antibody detection was less than 0.02 IU/ml. The cELISA did not demonstrate cross-reactivity against antibodies to canine distemper virus, parainfluenza virus, parvovirus, coronavirus, and canine adenovirus (types I and II). During the study of 137 dog blood sera, diagnostic specificity (DSp) and diagnostic sensitivity (DSe) for the cELISA were 83.1% and 94.9%, respectively, and CD between the cELISA and FAVN results was 0.968, p < 0.001.Discussion. Indirect ELISA test systems for determining the level of antibodies to RABV are not sensitive enough compared to reference tests, unlike cELISA. The developed test system is not inferior for its DSp and DSe to the commercial cELISA BioPro ELISA Rabies Ab (DSp 66.7%, DSe 94.4%).Conclusion. The developed cELISA test system can be used to detect antibodies to RABV in the blood serum of dogs for evaluating the effectiveness of mass vaccination programs.

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Competitive ELISA test system for the detection of antibodies to the rabies virus in animals (Rhabdoviridae: Lyssavirus)

Lobanova

Tsar'kova

Богомолова

et al. 2022

Problems of Virology

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Obtaining components of a test system based on a competitive elisa for the detection of antibodies to the rabies virus

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Competitive ELISA test system for the detection of antibodies to the rabies virus in animals (Rhabdoviridae: Lyssavirus)

Competitive ELISA test system for the detection of antibodies to the rabies virus in animals (Rhabdoviridae: Lyssavirus)

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