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      Avaliação da vacina anti-rábica ERA, frente a variantes antigênicas do vírus da raiva, em diferentes períodos pós-imunização Translated title: Evaluation of the ERA antirabies vaccine against antigenic variants of rabies virus in different post-immunization periods

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          Abstract

          Avaliou-se, em camudongos, os níveis de proteção conferidos por uma vacina anti-rábica atenuada, preparada em cultura de tecido renal a partir da amostra ERA, frente a diferentes variantes antigênicas dos vírus da raiva. Utilizaram-se dois esquemas de vacinação, representados por uma única dose e por 6 doses aplicadas em dias alternados. Os diferentes camundogos dos grupos experimentais foram desafiados, em diversos períodos pós-imunização (15, 30, 60 e 120 dias), com variantes procedentes de cães (São Paulo e Nigéria), de morcego (DR-19 e Pernambuco), de raposa (Rio Grande do Norte) e CVS "Challenge Virus Standard". Os resultados obtidos permitiram constatar que a vacina ERA foi eficaz contra todas as variantes de rua e silváticas do vírus rábico, independentemente do esquema vacinal. Contra as cepas adaptadas no laboratório DR-19 e CVS, quando aplicada em uma única dose, sua eficácia foi menor do que quando aplicada em 6 doses.

          Translated abstract

          Protection levels of an attenuated antirabies vaccine, of ERA origin, prepared in Kidney tissue culture, were evaluated in mice. Two schemes of vaccination were utilized: a single dose and 6 doses on alternate days. Animals of different experimental groups were challenged at 15, 30, 60 and 120 days post-immunization with six antigenic variants of rabies virus: strains of dog origin (S. Paulo, Brazil and Nigéria), vampire origin (DR-19 and Pernambuco, Brazil), fox origin (Rio Grande do Norte,Brazil), and CVS (Challenge Virus Standard). The results showed the effectiveness of the ERA vaccine against all antigenic variants of street and sylvatic rabies virus, independently of the vaccination scheme. Against the laboratory strains (DR-19 and CVS) the ERA vaccine was less effective, mainly in the groups vaccinated with a single dose.

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          Most cited references17

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          Demonstration of antigenic variation among rabies virus isolates by using monoclonal antibodies to nucleocapsid proteins.

          Rabies virus isolates from terrestrial animals in six areas of the United States were examined with a panel of monoclonal antibodies to nucleocapsid proteins. Characteristic differences in immunofluorescence reactions permitted the formation of four antigenically distinct reaction groups from the 231 isolates tested. The geographic distribution of these groups corresponded well with separate rabies enzootic areas recognized by surveillance of sylvatic rabies in the United States. Distinctive reaction patterns were also identified for viral proteins from four infected bat species, and identical patterns were found in eight isolated cases of rabies in terrestrial animals. These findings suggest that monoclonal antibodies can be used to study the prevalence, distribution, and transmission of rabies among wildlife species.
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            An Attenuated Rabies Vaccine for Domestic Animals Produced in Tissue Culture.

            M Abelseth (1964)
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              Antigenic Diversity of the Glycoprotein and Nucleocapsid Proteins of Rabies and Rabies-Related Viruses: Implications for Epidemiology and Control of Rabies

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                Author and article information

                Journal
                rsp
                Revista de Saúde Pública
                Rev. Saúde Pública
                Faculdade de Saúde Pública da Universidade de São Paulo (São Paulo, SP, Brazil )
                0034-8910
                1518-8787
                December 1990
                : 24
                : 6
                : 512-517
                Affiliations
                [01] Campinas SP orgnameMinistério da Agricultura orgdiv1Laboratório Regional de Apoio Animal Brasil
                [02] São Paulo São Paulo orgnameUniversidade de São Paulo orgdiv1Faculdade de Saúde Pública orgdiv2Departamento de Prática de Saúde Pública Brazil
                Article
                S0034-89101990000600010 S0034-8910(90)02400610
                10.1590/S0034-89101990000600010
                80b3f0e9-1895-4ea0-849e-2b5de3f3fe9b

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 20 September 1990
                : 30 March 1990
                : 19 September 1990
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 30, Pages: 6
                Product

                SciELO Public Health

                Self URI: Texto completo somente em PDF (PT)
                Categories
                Artigos Originais

                Vacina antí-rábica,Eficácia,Raiva,Rabies vaccine,Efficacy,Rabies

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