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Seasonality of viral respiratory infections in southeast of Brazil: the influence of temperature and air humidity
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...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Sociedade Brasileira de Microbiologia
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3768995/ https://www.ncbi.nlm.nih.gov/pubmed/24031808 http://dx.doi.org/10.1590/S1517-838220120001000011 |
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author | Gardinassi, Luiz Gustavo Marques Simas, Paulo Vitor Salomão, João Batista Durigon, Edison Luiz Zanetta Trevisan, Dirce Maria Cordeiro, José Antonio Lacerda, Mauricio Nogueira Rahal, Paula de Souz, Fátima Pereira |
author_facet | Gardinassi, Luiz Gustavo Marques Simas, Paulo Vitor Salomão, João Batista Durigon, Edison Luiz Zanetta Trevisan, Dirce Maria Cordeiro, José Antonio Lacerda, Mauricio Nogueira Rahal, Paula de Souz, Fátima Pereira |
author_sort | Gardinassi, Luiz Gustavo |
collection | PubMed |
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. |
format | Online Article Text |
id | pubmed-3768995 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Sociedade Brasileira de Microbiologia |
record_format | MEDLINE/PubMed |
spelling | pubmed-37689952013-09-12 Seasonality of viral respiratory infections in southeast of Brazil: the influence of temperature and air humidity Gardinassi, Luiz Gustavo Marques Simas, Paulo Vitor Salomão, João Batista Durigon, Edison Luiz Zanetta Trevisan, Dirce Maria Cordeiro, José Antonio Lacerda, Mauricio Nogueira Rahal, Paula de Souz, Fátima Pereira Braz J Microbiol Industrial Microbiology 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. Sociedade Brasileira de Microbiologia 2012 2012-06-01 /pmc/articles/PMC3768995/ /pubmed/24031808 http://dx.doi.org/10.1590/S1517-838220120001000011 Text en © Sociedade Brasileira de Microbiologia http://creativecommons.org/licenses/by-nc/3.0/ All the content of the journal, except where otherwise noted, is licensed under a Creative Commons License |
spellingShingle | Industrial Microbiology Gardinassi, Luiz Gustavo Marques Simas, Paulo Vitor Salomão, João Batista Durigon, Edison Luiz Zanetta Trevisan, Dirce Maria Cordeiro, José Antonio Lacerda, Mauricio Nogueira Rahal, Paula de Souz, Fátima Pereira 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 |
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_short | 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 |
topic | Industrial Microbiology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3768995/ https://www.ncbi.nlm.nih.gov/pubmed/24031808 http://dx.doi.org/10.1590/S1517-838220120001000011 |
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