Seasonality of viral respiratory infections in Southeast of Brazil: the influence of temperature and air humidity

Detalhes bibliográficos
Autor(a) principal: Gardinassi,Luiz Gustavo
Data de Publicação: 2012
Outros Autores: Simas,Paulo Vitor Marques, Salomão,João Batista, Durigon,Edison Luiz, Trevisan,Dirce Maria Zanetta, Cordeiro,José Antonio, Lacerda,Mauricio Nogueira, Rahal,Paula, Souza,Fátima Pereira de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Microbiology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100011
Resumo: Viruses are the major cause of lower respiratory tract infections in childhood and the main viruses involved are Human Respiratory Syncytial Virus (HRSV), Human Metapneumovirus (HMPV), Influenzavirus A and B (FLUA and FLUB), Human Parainfluenza Virus 1, 2 and 3 (HPIV1, 2 and 3) and Human Rhinovirus (HRV). The purposes of this study were to detect respiratory viruses in hospitalized children younger than six years and identify the influence of temperature and relative air humidity on the detected viruses. Samples of nasopharyngeal washes were collected from hospitalized children between May/2004 and September/2005. Methods of viral detection were RT-PCR, PCR and HRV amplicons were confirmed by hybridization. Results showed 54% (148/272) of viral positivity. HRSV was detected in 29% (79/272) of the samples; HRV in 23.1% (63/272); HPIV3 in 5.1% (14/272); HMPV in 3.3% (9/272); HPIV1 in 2.9% (8/272); FLUB in 1.4% (4/272), FLUA in 1.1% (3/272), and HPIV2 in 0.3% (1/272). The highest detection rates occurred mainly in the spring 2004 and in the autumn 2005. It was observed that viral respiratory infections tend to increase as the relative air humidity decreases, showing significant association with monthly averages of minimal temperature and minimal relative air humidity. In conclusion, viral respiratory infections vary according to temperature and relative air humidity and viral respiratory infections present major incidences it coldest and driest periods.
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spelling Seasonality of viral respiratory infections in Southeast of Brazil: the influence of temperature and air humidityViral Respiratory InfectionsHRSVHRVTemperatureRelative Air HumidityViruses are the major cause of lower respiratory tract infections in childhood and the main viruses involved are Human Respiratory Syncytial Virus (HRSV), Human Metapneumovirus (HMPV), Influenzavirus A and B (FLUA and FLUB), Human Parainfluenza Virus 1, 2 and 3 (HPIV1, 2 and 3) and Human Rhinovirus (HRV). The purposes of this study were to detect respiratory viruses in hospitalized children younger than six years and identify the influence of temperature and relative air humidity on the detected viruses. Samples of nasopharyngeal washes were collected from hospitalized children between May/2004 and September/2005. Methods of viral detection were RT-PCR, PCR and HRV amplicons were confirmed by hybridization. Results showed 54% (148/272) of viral positivity. HRSV was detected in 29% (79/272) of the samples; HRV in 23.1% (63/272); HPIV3 in 5.1% (14/272); HMPV in 3.3% (9/272); HPIV1 in 2.9% (8/272); FLUB in 1.4% (4/272), FLUA in 1.1% (3/272), and HPIV2 in 0.3% (1/272). The highest detection rates occurred mainly in the spring 2004 and in the autumn 2005. It was observed that viral respiratory infections tend to increase as the relative air humidity decreases, showing significant association with monthly averages of minimal temperature and minimal relative air humidity. In conclusion, viral respiratory infections vary according to temperature and relative air humidity and viral respiratory infections present major incidences it coldest and driest periods.Sociedade Brasileira de Microbiologia2012-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100011Brazilian Journal of Microbiology v.43 n.1 2012reponame:Brazilian Journal of Microbiologyinstname:Sociedade Brasileira de Microbiologia (SBM)instacron:SBM10.1590/S1517-83822012000100011info:eu-repo/semantics/openAccessGardinassi,Luiz GustavoSimas,Paulo Vitor MarquesSalomão,João BatistaDurigon,Edison LuizTrevisan,Dirce Maria ZanettaCordeiro,José AntonioLacerda,Mauricio NogueiraRahal,PaulaSouza,Fátima Pereira deeng2012-05-02T00:00:00Zoai:scielo:S1517-83822012000100011Revistahttps://www.scielo.br/j/bjm/ONGhttps://old.scielo.br/oai/scielo-oai.phpbjm@sbmicrobiologia.org.br||mbmartin@usp.br1678-44051517-8382opendoar:2012-05-02T00:00Brazilian Journal of Microbiology - Sociedade Brasileira de Microbiologia (SBM)false
dc.title.none.fl_str_mv Seasonality of viral respiratory infections in Southeast of Brazil: the influence of temperature and air humidity
title Seasonality of viral respiratory infections in Southeast of Brazil: the influence of temperature and air humidity
spellingShingle Seasonality of viral respiratory infections in Southeast of Brazil: the influence of temperature and air humidity
Gardinassi,Luiz Gustavo
Viral Respiratory Infections
HRSV
HRV
Temperature
Relative Air Humidity
title_short Seasonality of viral respiratory infections in Southeast of Brazil: the influence of temperature and air humidity
title_full Seasonality of viral respiratory infections in Southeast of Brazil: the influence of temperature and air humidity
title_fullStr Seasonality of viral respiratory infections in Southeast of Brazil: the influence of temperature and air humidity
title_full_unstemmed Seasonality of viral respiratory infections in Southeast of Brazil: the influence of temperature and air humidity
title_sort Seasonality of viral respiratory infections in Southeast of Brazil: the influence of temperature and air humidity
author Gardinassi,Luiz Gustavo
author_facet Gardinassi,Luiz Gustavo
Simas,Paulo Vitor Marques
Salomão,João Batista
Durigon,Edison Luiz
Trevisan,Dirce Maria Zanetta
Cordeiro,José Antonio
Lacerda,Mauricio Nogueira
Rahal,Paula
Souza,Fátima Pereira de
author_role author
author2 Simas,Paulo Vitor Marques
Salomão,João Batista
Durigon,Edison Luiz
Trevisan,Dirce Maria Zanetta
Cordeiro,José Antonio
Lacerda,Mauricio Nogueira
Rahal,Paula
Souza,Fátima Pereira de
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Gardinassi,Luiz Gustavo
Simas,Paulo Vitor Marques
Salomão,João Batista
Durigon,Edison Luiz
Trevisan,Dirce Maria Zanetta
Cordeiro,José Antonio
Lacerda,Mauricio Nogueira
Rahal,Paula
Souza,Fátima Pereira de
dc.subject.por.fl_str_mv Viral Respiratory Infections
HRSV
HRV
Temperature
Relative Air Humidity
topic Viral Respiratory Infections
HRSV
HRV
Temperature
Relative Air Humidity
description Viruses are the major cause of lower respiratory tract infections in childhood and the main viruses involved are Human Respiratory Syncytial Virus (HRSV), Human Metapneumovirus (HMPV), Influenzavirus A and B (FLUA and FLUB), Human Parainfluenza Virus 1, 2 and 3 (HPIV1, 2 and 3) and Human Rhinovirus (HRV). The purposes of this study were to detect respiratory viruses in hospitalized children younger than six years and identify the influence of temperature and relative air humidity on the detected viruses. Samples of nasopharyngeal washes were collected from hospitalized children between May/2004 and September/2005. Methods of viral detection were RT-PCR, PCR and HRV amplicons were confirmed by hybridization. Results showed 54% (148/272) of viral positivity. HRSV was detected in 29% (79/272) of the samples; HRV in 23.1% (63/272); HPIV3 in 5.1% (14/272); HMPV in 3.3% (9/272); HPIV1 in 2.9% (8/272); FLUB in 1.4% (4/272), FLUA in 1.1% (3/272), and HPIV2 in 0.3% (1/272). The highest detection rates occurred mainly in the spring 2004 and in the autumn 2005. It was observed that viral respiratory infections tend to increase as the relative air humidity decreases, showing significant association with monthly averages of minimal temperature and minimal relative air humidity. In conclusion, viral respiratory infections vary according to temperature and relative air humidity and viral respiratory infections present major incidences it coldest and driest periods.
publishDate 2012
dc.date.none.fl_str_mv 2012-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100011
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100011
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1517-83822012000100011
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Microbiologia
publisher.none.fl_str_mv Sociedade Brasileira de Microbiologia
dc.source.none.fl_str_mv Brazilian Journal of Microbiology v.43 n.1 2012
reponame:Brazilian Journal of Microbiology
instname:Sociedade Brasileira de Microbiologia (SBM)
instacron:SBM
instname_str Sociedade Brasileira de Microbiologia (SBM)
instacron_str SBM
institution SBM
reponame_str Brazilian Journal of Microbiology
collection Brazilian Journal of Microbiology
repository.name.fl_str_mv Brazilian Journal of Microbiology - Sociedade Brasileira de Microbiologia (SBM)
repository.mail.fl_str_mv bjm@sbmicrobiologia.org.br||mbmartin@usp.br
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