Anais do Congresso Brasileiro de Virologia & Encontro de Virologia do Mercosul

VIROLOGICAL SURVEILLANCE OF RABIES IN ANIMALS IN RIO DE JANEIRO

Published in 04/01/2021 - ISBN: 978-65-5941-175-7

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DOI
10.29327/cbv.294639  
Paper Title
VIROLOGICAL SURVEILLANCE OF RABIES IN ANIMALS IN RIO DE JANEIRO
Authors
  • Lais HIGINO DORO
  • Juliana Macedo Raimundo
  • Sergio Madeira da Costa
  • Thais Chouin-Carneiro
  • Mila Muraro De Almeida
  • Ana Carolina Nunes de Morais
  • Danielle Regis Pires
  • Priscila Conrado Guerra Nunes
Modality
Resumo
Subject area
Veterinária
Publishing Date
04/01/2021
Country of Publishing
Brasil
Language of Publishing
Inglês
Paper Page
https://www.even3.com.br/anais/cbv/294639-virological-surveillance-of-rabies-in-animals-in-rio-de-janeiro
ISBN
978-65-5941-175-7
Keywords
Rabies; direct immunofluorescence; biological tests
Summary
The Rabies virus (RABV) causes an acute infectious disease, which leads to progressive encephalitis in mammals, including humans, with approximately 100% lethality. Despite the existence of an effective vaccine, rabies remains a public health problem worldwide, especially in developing countries. All mammals are susceptible to rabies and transmission in tropical countries involves two major cycles: the urban cycle, in which dogs and cats are the main sources of infection, and the sylvatic, where transmission mainly occurs from bats, monkeys and foxes. In Brazil, from 2010 to 2020, 39 human rabies cases were reported to the Brazilian Ministry of Health. Out of those cases, 51% were transmitted by bats, 33% by domestic animals and 15% by other wild mammals. This study aims to report the occurrence of rabies in Rio de Janeiro municipality, evaluating the virus positivity in the samples sent for diagnosis at Virology Laboratory from January 2019 to August 2020. During this period, a total of 672 samples were sent for rabies diagnosis, including dogs, cats, bats and other animal species. The highest number of brain samples were collected from bats (50%), followed by non-human primates (41%), cats (5%) and dogs (3%). All rabies tests were performed by Virology Laboratory/LASP following international guidelines for laboratory and diagnostic techniques. At first, diagnoses were performed by using direct immunofluorescence assay (DIF). Whenever the first exams were negative, the biological tests (BT) were applied. Out of the tested samples, only 4.9% (33/672) were positive for the rabies virus. Bats samples showed 9.5% (32/337) positivity by DIF and 13% (4/305) of cases negative by DIF were positive by BT. Only 0.3% (1/276) of non-human primates was positive by DIF. All dogs and cats samples received during this period were negative for rabies virus in both techniques. Of 672 suspected animals tested, 17% (116/672) had contact with humans or/and their pets. Successful preventive and control measures of zoonotic diseases require updated epidemiological data. The participation of bats in the epidemiology of the disease is unquestionable and requires an important epidemiological surveillance attention. These findings indicate that Rabies remain a public health problem and continue to present health risks for both human and animals, requiring the maintenance of a permanent and systematic epidemiological surveillance of rabies in natural environments.
Title of the Event
XXXI Congresso Brasileiro de Virologia & XV Encontro de Virologia do Mercosul
Title of the Proceedings of the event
Anais do Congresso Brasileiro de Virologia & Encontro de Virologia do Mercosul
Name of the Publisher
Even3
Means of Dissemination
Meio Digital
DOI

How to cite

DORO, Lais HIGINO et al.. VIROLOGICAL SURVEILLANCE OF RABIES IN ANIMALS IN RIO DE JANEIRO.. In: Congresso Brasileiro de Virologia & Encontro de Virologia do Mercosul. Anais...Porto Alegre(RS) Online, 2020. Available in: https//www.even3.com.br/anais/cbv/294639-VIROLOGICAL-SURVEILLANCE-OF-RABIES-IN-ANIMALS-IN-RIO-DE-JANEIRO. Access in: 15/08/2025

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