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

INFLUENCE OF THE DEFORESTATION AND OF THE EL NIÑO-SOUTH OSCILLATION (ENSO) ON THE PREVALENCE OF ARBOVIROSIS IN THE STATE OF TOCANTINS/ BRAZIL IN THE LAST 10 YEARS

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

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DOI
10.29327/cbv.289217  
Paper Title
INFLUENCE OF THE DEFORESTATION AND OF THE EL NIÑO-SOUTH OSCILLATION (ENSO) ON THE PREVALENCE OF ARBOVIROSIS IN THE STATE OF TOCANTINS/ BRAZIL IN THE LAST 10 YEARS
Authors
  • Robson dos Santos Souza Marinho
  • Rodrigo Lopes Sanz Duro
  • Jaques Franco Novaes de Carvalho
  • RICARDO SOBHIE DIAZ
  • Fernando Shinji Kawakubo
  • Shirley Komninakis
Modality
Resumo
Subject area
Ambiental
Publishing Date
04/01/2021
Country of Publishing
Brasil
Language of Publishing
Inglês
Paper Page
https://www.even3.com.br/anais/cbv/289217-influence-of-the-deforestation-and-of-the-el-nino-south-oscillation-(enso)-on-the-prevalence-of-arbovirosis-in-th
ISBN
978-65-5941-175-7
Keywords
Deforestation, Climatic changes, Arbovirosis, Tocantins
Summary
Introduction: The environmental changes, often caused by anthropic actions, contribute to the emergence or reemergence of viruses important for public health. Here, we demonstrate the influence of the deforestation and of the climatic changes caused by ENSO with epidemics or outbreaks of arboviruses in Tocantins from 2010 to 2019. Material and Methods: The data of deforestation of shallow cut between the years 2010-2019 were acquired from PRODES (Monitoring the Brazilian Amazon Forest by Satellite) on the TerraBrasilis (http://terrabrasilis.dpi.inpe.br). Tocantins present two biomes: Amazon rainforest (occupying about 9% of the territory) and Cerrado (occupying about 91%). In view of this, we determined the rates of deforestation in both biomes. These procedures were performed using software ArcGis. We analyzed the frequency and the intensity of occurrence of ENSO during the period according to its values of the Oceanic Niño Index (ONI) available from the National Oceanic and Atmospheric Administration (NOAA) (https://www.cpc.ncep.noaa.gov/products/precip/CWlink/MJO/enso.shtml). It was created a database for emergent and/or reemerging arboviral infections based on information available from the Tocantins Health Secretary. After, we crossed this database with data of deforestation and ENSO. Results: We observed that the biome Cerrado presented an intense rate deforestation corresponding to 18.472.886.819 Km2 and the Amazon rainforest region 66.142.561 Km2; furthermore, we noticed a gradual increase in the intensity of occurrence of ENSO between December 2014 to January 2016 with ONI varying of 0.6 to 2.6, leaving the global temperature higher than normal. Inside of this analyzed period, the Tocantins Health Secretary registered an increase in cases of dengue infection, with 55.15% in 2010, 13.52% in 2011 and 9.62% in 2012. Recently, in 2019, the state led the national ranking with the highest prevalence (79.60%) of dengue cases in Brazil. In 2017 was observed an epidemic of chikungunya in state with many cases of infection (77.06%) and in 2016 there was the largest Zika epidemic with a prevalence of 95.87% (https://central3.to.gov.br/arquivo/492214/). It is also worth mentioning that during the period 2014-2016 Tocantins had 1 confirmed case of infection by Mayaro virus and cases of yellow fever epizootics in non-human primates were confirmed. Conclusion: We infer that the environmental changes (deforestation and climate) may havepresented a strong influence in the emergence and reemergence of arboviruses in the state of Tocantins from 2010 to 2019. Further analyzes will be performed to better understanding of this influence; the deforestation rates in 19 municipalities most populous in Tocantins as well as the vector density will be verified. Financial Support: National Council for Scientific and Technological Development [CNPq scholarship #167330/2018-7].
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

MARINHO, Robson dos Santos Souza et al.. INFLUENCE OF THE DEFORESTATION AND OF THE EL NIÑO-SOUTH OSCILLATION (ENSO) ON THE PREVALENCE OF ARBOVIROSIS IN THE STATE OF TOCANTINS/ BRAZIL IN THE LAST 10 YEARS.. 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/289217-INFLUENCE-OF-THE-DEFORESTATION-AND-OF-THE-EL-NINO-SOUTH-OSCILLATION-(ENSO)-ON-THE-PREVALENCE-OF-ARBOVIROSIS-IN-TH. Access in: 17/07/2025

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