Clinical manifestations of pandemic (H1N1) 2009 in the ambulatory setting

Introduction: In June 2009, the World Health Organization declared an influenza pandemic associated with the pandemic (H1N1) 2009 strain. It was summer in the northern hemisphere, and therefore travelling and vacation time, which also provided an increased opportunity for the dissemination of respi...

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Main Authors: Vítor Duque, João Vaz, Vanda Mota, Célia Morais, Saraiva da Cunha, António Meliço-Silvestre
Format: Article
Language:English
Published: The Journal of Infection in Developing Countries 2011-06-01
Series:Journal of Infection in Developing Countries
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Online Access:https://jidc.org/index.php/journal/article/view/2024
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author Vítor Duque
João Vaz
Vanda Mota
Célia Morais
Saraiva da Cunha
António Meliço-Silvestre
author_facet Vítor Duque
João Vaz
Vanda Mota
Célia Morais
Saraiva da Cunha
António Meliço-Silvestre
author_sort Vítor Duque
collection DOAJ
description Introduction: In June 2009, the World Health Organization declared an influenza pandemic associated with the pandemic (H1N1) 2009 strain. It was summer in the northern hemisphere, and therefore travelling and vacation time, which also provided an increased opportunity for the dissemination of respiratory diseases. Methodology: We reviewed the paper case report forms from all the patients with influenza-like illnesses with nasopharyngeal samples submitted for laboratory diagnosis of pandemic (H1N1) 2009 infection during the first wave of pandemic influenza that occurred between June and August 2009, in the central region of Portugal. Results: From all the patients with influenza-like illnesses, one third was found positive for pandemic (H1N1) 2009. Individuals under the age of 29 (75%) were the most affected. Most of the patients (91%) presented with fever. A group of symptoms were positively correlated with the probability of pandemic (H1N1) 2009 infection: cough, epistaxis, lack of dyspnea or vomiting, fever, headache and myalgia. Conclusions: During the first wave of the pandemic influenza, young individuals were the most affected, and in the ambulatory setting, presentation was of a mild febrile illness without complications.
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spelling doaj-art-1c37124101de4e3b90c955f8db5d1cb32025-08-20T02:27:00ZengThe Journal of Infection in Developing CountriesJournal of Infection in Developing Countries1972-26802011-06-0150910.3855/jidc.2024Clinical manifestations of pandemic (H1N1) 2009 in the ambulatory settingVítor Duque0João Vaz1Vanda Mota2Célia Morais3Saraiva da Cunha4António Meliço-Silvestre5Hospitais da Universidade de Coimbra, EPE, PortugalHospitais da Universidade de Coimbra, EPE, PortugalHospitais da Universidade de Coimbra, EPE, PortugalHospitais da Universidade de Coimbra, EPE, PortugalHospitais da Universidade de Coimbra, EPE, PortugalHospitais da Universidade de Coimbra, EPE, Portugal Introduction: In June 2009, the World Health Organization declared an influenza pandemic associated with the pandemic (H1N1) 2009 strain. It was summer in the northern hemisphere, and therefore travelling and vacation time, which also provided an increased opportunity for the dissemination of respiratory diseases. Methodology: We reviewed the paper case report forms from all the patients with influenza-like illnesses with nasopharyngeal samples submitted for laboratory diagnosis of pandemic (H1N1) 2009 infection during the first wave of pandemic influenza that occurred between June and August 2009, in the central region of Portugal. Results: From all the patients with influenza-like illnesses, one third was found positive for pandemic (H1N1) 2009. Individuals under the age of 29 (75%) were the most affected. Most of the patients (91%) presented with fever. A group of symptoms were positively correlated with the probability of pandemic (H1N1) 2009 infection: cough, epistaxis, lack of dyspnea or vomiting, fever, headache and myalgia. Conclusions: During the first wave of the pandemic influenza, young individuals were the most affected, and in the ambulatory setting, presentation was of a mild febrile illness without complications. https://jidc.org/index.php/journal/article/view/2024PandemicH1N1influenza2009manifestations
spellingShingle Vítor Duque
João Vaz
Vanda Mota
Célia Morais
Saraiva da Cunha
António Meliço-Silvestre
Clinical manifestations of pandemic (H1N1) 2009 in the ambulatory setting
Journal of Infection in Developing Countries
Pandemic
H1N1
influenza
2009
manifestations
title Clinical manifestations of pandemic (H1N1) 2009 in the ambulatory setting
title_full Clinical manifestations of pandemic (H1N1) 2009 in the ambulatory setting
title_fullStr Clinical manifestations of pandemic (H1N1) 2009 in the ambulatory setting
title_full_unstemmed Clinical manifestations of pandemic (H1N1) 2009 in the ambulatory setting
title_short Clinical manifestations of pandemic (H1N1) 2009 in the ambulatory setting
title_sort clinical manifestations of pandemic h1n1 2009 in the ambulatory setting
topic Pandemic
H1N1
influenza
2009
manifestations
url https://jidc.org/index.php/journal/article/view/2024
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