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Influenza severe cases in hospitals, between 2014 and 2016 in Portugal

2016-08-24Conference object Open access
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dc.contributor.authorGuiomar, Raquel
dc.contributor.authorPechirra, Pedro
dc.contributor.authorCristóvão, Paula
dc.contributor.authorCosta, Inês
dc.contributor.authorConde, Patrícia
dc.contributor.authorCorte-Real, Rita
dc.contributor.authorBranquinho, Paula
dc.contributor.authorSilvestre, Maria José
dc.contributor.authorAlmeida Santos, Madalena
dc.contributor.authorFernandes, Isabel
dc.contributor.authorDias, Isabel
dc.contributor.authorRodrigues, Sónia
dc.contributor.authorSena, Nadir
dc.contributor.authorLazzara, Daniela
dc.contributor.authorSobrinho Simões, Joana
dc.contributor.authorCosta, Maria do Rosário
dc.contributor.authorGuimarães, João Tiago
dc.contributor.authorRodrigues, Fernando
dc.contributor.authorPereira-Vaz, João
dc.contributor.authorCorreia, Lurdes
dc.contributor.authorAndrade, Graça
dc.contributor.authorFreitas, Ludivina
dc.contributor.authorFigueira, Neuza
dc.contributor.authorSanches, Raquel
dc.contributor.authorMarques, Mónica
dc.contributor.authorBarros, Margarida
dc.contributor.authorMota Vieira, Luísa
dc.contributor.authorCabral Veloso, Rita
dc.contributor.authorCastelo Branco, Cláudia
dc.contributor.authorPimentel, Sílvia
dc.contributor.authorDuarte, Joana
dc.contributor.authorPereirinha, Tânia
dc.contributor.authorBulhões, Sara
dc.contributor.authorMoniz, Raquel
dc.contributor.authorBrilhante, Maria José
dc.contributor.authorBruges Armas, Jácome
dc.contributor.authorPimentel Couto, Ana Rita
dc.contributor.authorSantos, Margarida
dc.contributor.authorSoares, Marta
dc.contributor.authorMelo Cristino, José
dc.contributor.authorRibeiro, Carlos
dc.contributor.authorCarvalho, Dinah
dc.contributor.authorBarreto, Rosário
dc.contributor.authorRamos, Maria Helena
dc.contributor.authorCastro, Ana Paula
dc.contributor.authorMatos Santos, Ana Cláudia
dc.contributor.authorCunha, Mário
dc.contributor.authorMartins, Luís
dc.contributor.authorAlmeida, Sofia
dc.contributor.authorPeres, Maria João
dc.contributor.authorViseu, Regina
dc.contributor.authorInácio, Filipe
dc.contributor.authorMota, Paula
dc.date.accessioned2017-02-16T14:35:59Z
dc.date.available2017-02-16T14:35:59Z
dc.date.issued2016-08-24
dc.descriptionRede Portuguesa de Laboratórios para o Diagnóstico da Gripept_PT
dc.description.abstractBackground: Since 2009, the Portuguese Laboratory Network (PLNID) for Influenza Diagnosis has integrated 15 Laboratories in mainland and Atlantic Islands of Azores and Madeira. This PLNID added an important contribute to the National Influenza Surveillance Program regarding severe and hospitalized influenza cases. The present study aims to describe influenza viruses detected in influenza like illness (ILI) cases: outpatients (Outp), hospitalized (Hosp), and intensive care units (ICU), between 2014 and 2016. Methods: The PLNID performs influenza virus diagnosis by biomolecular methodologies. Weekly reports to the National Influenza Reference Laboratory ILI cases tested for influenza. Reports include data on detecting viruses, hospital assistance, antiviral therapeutics, and information on death outcome. Were reported during two winter seasons 8059 ILI cases,being 3560 cases in 2014/15 (1024 in Outp, 1750 Hosp, and 606 in ICU) and 4499 cases in 2015/2016 (1933 in Outp, 1826 Hosp, and 740 in ICU). Results: The higher percentage of influenza positive cases were detected in Outp in both seasons, 18% during 2014/15 and 20% in 2015/16. In 2014/15,influenza cases were more frequent in individuals older than 65 years old and these required more hospitalizations,even in ICU. In 2015/16,the influenza cases were mainly detected in individuals between 15-64 years old. A higher proportion of influenza positive cases with hospitalization in ICU were observed in adults between 45-64 years old.During the study period,the predominant circulating influenza viruses were different in the two seasons: influenza B and A(H3) co-circulated in 2014/15,and influenza A(H1)pdm09 was predominant during 2015/16. Even when influenza A is notthe dominant virus, A(H3) and A(H1)pdm09 subtypes correlate with higher detection rate in hospitalized cases (Hosp and UCI), with higher frequencies in adults older than 45. Influenza B,detected in higher proportion in outpatients, was frequently relatedwith influenza cases in younger age groups: 0-4 and 5-14 years old. Conclusions: This study highlights the correlation of theinfluenza virus type/subtype that circulates in each season with the possible need for hospitalization and intensive care in special groups of the population. Circulation of influenza A subtypes can cause more frequentdisease in individuals older than 45, with need of hospitalization including intensive care. On the other hand, influenza B is more frequently associated with less severe cases and with infection in children and younger adults. Influenza B circulation might predict lower number of hospitalizations.The identification of influenza type in circulation,byPLNID ineach season, could guide action planning measures in population health care.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.urihttp://hdl.handle.net/10400.18/4211
dc.language.isoengpt_PT
dc.peerreviewednopt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectInfecções Respiratóriaspt_PT
dc.subjectGripept_PT
dc.subjectSevere Influenzapt_PT
dc.titleInfluenza severe cases in hospitals, between 2014 and 2016 in Portugalpt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceChicago, USApt_PT
oaire.citation.titleIX Options for the Control fo Influenza, 24-28 August 2016pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT

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