Relationship between temperature and relative humidity on initial spread of COVID-19 cases and related deaths in Brazil
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/255491 |
Resumo: | Introduction: Climate conditions may influence the transmission of COVID-19. Thus, the aim of this study was to evaluate the impact of temperature and relative humidity on COVID-19 cases and related deaths during the initial phase of the epidemic in Brazil.Methodology: An ecological study based on secondary data was conducted. Daily data on new COVID-19 cases, deaths, and climate indicators were collected from February 20 to April 18, 2020 (n = 59 days) for all state capital cities in Brazil and the Federal District (Brasília). The climate indicators included mean temperature, temperature amplitude, mean relative humidity, relative humidity amplitude, and percentage of days with mean relative humidity ≤ 65 %. Correlation and multiple linear regression analyses were performed for all cities and stratified by quintiles of the COVID-19 incidence rate.Results: The mean daily temperature was positively correlated with the number of days until the first COVID-19 case was reported. A lower mean relative humidity was correlated with a lower number of cases and deaths in Brazil, especially when the relative humidity was ≤ 65 %. Higher temperatures and humidity amplitudes were correlated with lower COVID-19 mortality. Additionally, after controlling for humidity, cumulative cases of COVID-19 were inversely associated with temperature in cities with mean temperatures less than 25.8 °C.Conclusions: Variations in temperature and humidity across the Brazilian territory may have influenced the spread of the novel coronavirus during the initial phase of the epidemic. |
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Olinto, Maria Teresa AnselmoGarcêz, Anderson da SilvaBrunelli, GabrielOlinto, Flávio AnselmoFanton, MarcosCanuto, Raquel2023-03-10T03:25:30Z20221972-2680http://hdl.handle.net/10183/255491001160682Introduction: Climate conditions may influence the transmission of COVID-19. Thus, the aim of this study was to evaluate the impact of temperature and relative humidity on COVID-19 cases and related deaths during the initial phase of the epidemic in Brazil.Methodology: An ecological study based on secondary data was conducted. Daily data on new COVID-19 cases, deaths, and climate indicators were collected from February 20 to April 18, 2020 (n = 59 days) for all state capital cities in Brazil and the Federal District (Brasília). The climate indicators included mean temperature, temperature amplitude, mean relative humidity, relative humidity amplitude, and percentage of days with mean relative humidity ≤ 65 %. Correlation and multiple linear regression analyses were performed for all cities and stratified by quintiles of the COVID-19 incidence rate.Results: The mean daily temperature was positively correlated with the number of days until the first COVID-19 case was reported. A lower mean relative humidity was correlated with a lower number of cases and deaths in Brazil, especially when the relative humidity was ≤ 65 %. Higher temperatures and humidity amplitudes were correlated with lower COVID-19 mortality. Additionally, after controlling for humidity, cumulative cases of COVID-19 were inversely associated with temperature in cities with mean temperatures less than 25.8 °C.Conclusions: Variations in temperature and humidity across the Brazilian territory may have influenced the spread of the novel coronavirus during the initial phase of the epidemic.application/pdfengJournal of infection in developing countries. Sassari. Vol. 16, no. 5 (2022), p. 759-767.TemperaturaCOVID-19Transmissão de doença infecciosaBrasilTemperatureRelative humidityBrazilRelationship between temperature and relative humidity on initial spread of COVID-19 cases and related deaths in BrazilEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001160682.pdf.txt001160682.pdf.txtExtracted Texttext/plain42792http://www.lume.ufrgs.br/bitstream/10183/255491/2/001160682.pdf.txt59a9566f03eb1bc85333cd93f0dbdb1bMD52ORIGINAL001160682.pdfTexto completo (inglês)application/pdf815830http://www.lume.ufrgs.br/bitstream/10183/255491/1/001160682.pdf4653eba814d0aa90fdd6ae0cb9a62005MD5110183/2554912023-09-28 03:35:11.100603oai:www.lume.ufrgs.br:10183/255491Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-09-28T06:35:11Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Relationship between temperature and relative humidity on initial spread of COVID-19 cases and related deaths in Brazil |
title |
Relationship between temperature and relative humidity on initial spread of COVID-19 cases and related deaths in Brazil |
spellingShingle |
Relationship between temperature and relative humidity on initial spread of COVID-19 cases and related deaths in Brazil Olinto, Maria Teresa Anselmo Temperatura COVID-19 Transmissão de doença infecciosa Brasil Temperature Relative humidity Brazil |
title_short |
Relationship between temperature and relative humidity on initial spread of COVID-19 cases and related deaths in Brazil |
title_full |
Relationship between temperature and relative humidity on initial spread of COVID-19 cases and related deaths in Brazil |
title_fullStr |
Relationship between temperature and relative humidity on initial spread of COVID-19 cases and related deaths in Brazil |
title_full_unstemmed |
Relationship between temperature and relative humidity on initial spread of COVID-19 cases and related deaths in Brazil |
title_sort |
Relationship between temperature and relative humidity on initial spread of COVID-19 cases and related deaths in Brazil |
author |
Olinto, Maria Teresa Anselmo |
author_facet |
Olinto, Maria Teresa Anselmo Garcêz, Anderson da Silva Brunelli, Gabriel Olinto, Flávio Anselmo Fanton, Marcos Canuto, Raquel |
author_role |
author |
author2 |
Garcêz, Anderson da Silva Brunelli, Gabriel Olinto, Flávio Anselmo Fanton, Marcos Canuto, Raquel |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Olinto, Maria Teresa Anselmo Garcêz, Anderson da Silva Brunelli, Gabriel Olinto, Flávio Anselmo Fanton, Marcos Canuto, Raquel |
dc.subject.por.fl_str_mv |
Temperatura COVID-19 Transmissão de doença infecciosa Brasil |
topic |
Temperatura COVID-19 Transmissão de doença infecciosa Brasil Temperature Relative humidity Brazil |
dc.subject.eng.fl_str_mv |
Temperature Relative humidity Brazil |
description |
Introduction: Climate conditions may influence the transmission of COVID-19. Thus, the aim of this study was to evaluate the impact of temperature and relative humidity on COVID-19 cases and related deaths during the initial phase of the epidemic in Brazil.Methodology: An ecological study based on secondary data was conducted. Daily data on new COVID-19 cases, deaths, and climate indicators were collected from February 20 to April 18, 2020 (n = 59 days) for all state capital cities in Brazil and the Federal District (Brasília). The climate indicators included mean temperature, temperature amplitude, mean relative humidity, relative humidity amplitude, and percentage of days with mean relative humidity ≤ 65 %. Correlation and multiple linear regression analyses were performed for all cities and stratified by quintiles of the COVID-19 incidence rate.Results: The mean daily temperature was positively correlated with the number of days until the first COVID-19 case was reported. A lower mean relative humidity was correlated with a lower number of cases and deaths in Brazil, especially when the relative humidity was ≤ 65 %. Higher temperatures and humidity amplitudes were correlated with lower COVID-19 mortality. Additionally, after controlling for humidity, cumulative cases of COVID-19 were inversely associated with temperature in cities with mean temperatures less than 25.8 °C.Conclusions: Variations in temperature and humidity across the Brazilian territory may have influenced the spread of the novel coronavirus during the initial phase of the epidemic. |
publishDate |
2022 |
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2022 |
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2023-03-10T03:25:30Z |
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Estrangeiro info:eu-repo/semantics/article |
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dc.relation.ispartof.pt_BR.fl_str_mv |
Journal of infection in developing countries. Sassari. Vol. 16, no. 5 (2022), p. 759-767. |
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info:eu-repo/semantics/openAccess |
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openAccess |
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