Pandemic influenza A (H1N1) in the North of Portugal: How did the autumn-winter wave behave?

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Cavalheri, C.A. Camillo, A.F. Brunetto, V.S. Probst, E.M. Cipulo Ramos, F. Pitta" "autores" => array:6 [ 0 => array:2 [ "nombre" => "V." "apellidos" => "Cavalheri" ] 1 => array:2 [ "nombre" => "C.A." "apellidos" => "Camillo" ] 2 => array:2 [ "nombre" => "A.F." "apellidos" => "Brunetto" ] 3 => array:2 [ "nombre" => "V.S." "apellidos" => "Probst" ] 4 => array:2 [ "nombre" => "E.M." "apellidos" => "Cipulo Ramos" ] 5 => array:2 [ "nombre" => "F." 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Duque, E. Cordeiro, V. Mota, J. Vaz, C. Morais, F. Rodrigues, F. Coelho, J. Saraiva da Cunha, A. Meliço-Silvestre" "autores" => array:9 [ 0 => array:2 [ "nombre" => "V." "apellidos" => "Duque" ] 1 => array:2 [ "nombre" => "E." "apellidos" => "Cordeiro" ] 2 => array:2 [ "nombre" => "V." "apellidos" => "Mota" ] 3 => array:2 [ "nombre" => "J." "apellidos" => "Vaz" ] 4 => array:2 [ "nombre" => "C." "apellidos" => "Morais" ] 5 => array:2 [ "nombre" => "F." "apellidos" => "Rodrigues" ] 6 => array:2 [ "nombre" => "F." "apellidos" => "Coelho" ] 7 => array:2 [ "nombre" => "J. Saraiva" "apellidos" => "da Cunha" ] 8 => array:2 [ "nombre" => "A." "apellidos" => "Meliço-Silvestre" ] ] ] ] ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2173511510700038?idApp=UINPBA00004E" "url" => "/21735115/0000001600000006/v1_201305151537/S2173511510700038/v1_201305151537/en/main.assets" ] "en" => array:15 [ "idiomaDefecto" => true "cabecera" => "Original article" "titulo" => "Pandemic influenza A (H1N1) in the North of Portugal: How did the autumn-winter wave behave?" "tieneTextoCompleto" => 0 "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "880" "paginaFinal" => "886" ] ] "autores" => array:1 [ 0 => array:4 [ "autoresLista" => "A.M. Correia, L. Queirós, J. Dias" "autores" => array:3 [ 0 => array:4 [ "nombre" => "A.M." "apellidos" => "Correia" "email" => array:1 [ 0 => "acorreia@arsnorte.min-saude.pt" ] "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "*" "identificador" => "cor0005" ] ] ] 1 => array:2 [ "nombre" => "L." "apellidos" => "Queirós" ] 2 => array:2 [ "nombre" => "J." "apellidos" => "Dias" ] ] "afiliaciones" => array:1 [ 0 => array:1 [ "entidad" => "Epidemiological Surveillance Unit, Department of Public Health, Northern Regional Health Administration, Ministry of Health, Porto, Portugal" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor0005" "etiqueta" => "*" "correspondencia" => "Corresponding author." ] ] ] ] "titulosAlternativos" => array:1 [ "pt" => array:1 [ "titulo" => "Pandemia de gripe A (H1N1) no Norte de Portugal: Características da onda de outono/inverno" ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "fechaRecibido" => "2010-07-04" "fechaAceptado" => "2010-09-22" "PalabrasClave" => array:2 [ "en" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Keywords" "identificador" => "xpalclavsec161123" "palabras" => array:4 [ 0 => "Influenza" 1 => "H1N1" 2 => "Pandemics" 3 => "2009" ] ] ] "pt" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Palavras-chave" "identificador" => "xpalclavsec161124" "palabras" => array:4 [ 0 => "Gripe" 1 => "H1N1" 2 => "Pandemia" 3 => "2009" ] ] ] ] "tieneResumen" => true "resumen" => array:2 [ "en" => array:2 [ "titulo" => "Abstract" "resumen" => "IntroductionIn April 2009 the Centers for Disease Control and Prevention announced the identification of a novel influenza virus in two patients in California, called influenza A (H1N1) 2009. On 11 June 2009 the Director-General of the World Health Organization declared a pandemic of influenza A (H1N1). In Portugal the first case of pandemic influenza A (H1N1) was reported on 29th April and the Northern Region of the country registered the first cases soon after that. AimThis report pretends to give an overview of the characteristics of Autumn/Winter pandemic wave in the North of Portugal. ResultsA total of 64 195 cases of influenza-like illness were registered in public health services in the region between week 40, 2009 and week 4, 2010. The cumulative attack rate of those cases was 17.1/1 000 inhabitants. Most of the cases occurred in females and in the under 20 years. The peak of the Autumn/Winter wave was attained in week 48, but geographic and time distribution of the pandemic was heterogeneous in the region. Hospitalization rate for influenza-like illness cases in the population was higher for the under 10 years and decreased with age. Forty four deaths in pandemic influenza A (H1N1) laboratory-confirmed cases occurred in the region (mortality rate – 1.2/100 000) and the risk of death was lower in younger age groups. The peak of deaths occurred two weeks latter than the peak of cases. ConclusionWe can assume that the Autumn/Winter pandemic wave impact was mild in the Northern Region of Portugal. We consider the importance of pursuing and reinforcing influenza surveillance in the region." ] "pt" => array:2 [ "titulo" => "Resumo" "resumen" => "IntroduçãoEm Abril de 2009 o Centers for Disease Control and Prevention anunciou a identificação de um novo vírus influenza em dois doentes na Califórnia, o qual viria a ser designado como influenza A (H1N1) 2009. No dia 11 de Junho de 2009 o Director-Geral da Organização Mundial de Saúde declarou estarmos perante uma pandemia por vírus influenza A (H1N1). Em Portugal o primeiro caso de gripe por vírus influenza A (H1N1) foi registado no dia 29 de Abril de 2009, tendo na região Norte sido declarado o primeiro caso pouco tempo depois. ObjectivosNeste artigo pretende-se dar uma visão global sobre as características da onda pandémica de Outono/Inverno no Norte de Portugal. ResultadosRegistaram-se 64 195 casos de síndrome gripal nos serviços públicos de saúde da região entre a semana 40 de 2009 e a semana 4 de 2010. A taxa acumulada de casos registados foi de 17,1 por mil habitantes. A maior parte dos casos ocorreu no sexo feminino e em menores de 20 anos de idade. O pico da onda de Outono/Inverno foi atingido na semana 48, mas a distribuição geográfica e temporal da onda pandémica foi muito heterogénea na região. A taxa de hospitalização por síndrome gripal na população foi mais elevada nos menores de 10 anos de idade e decresceu nos grupos etários mais velhos. Registaram-se 44 óbitos em casos confirmados de Gripe A na região (taxa de mortalidade – 1,2/100 000) sendo o risco de morrer mais baixo nos grupos etários mais jovens. O pico dos óbitos ocorreu duas semanas mais tarde do que o pico dos casos. ConclusõesAdmitimos que o impacto da onda pandémica de Outono/Inverno no Norte de Portugal foi reduzido. Consideramos, no entanto, a importância de prosseguir e reforçar a vigilância da gripe na região." ] ] "bibliografia" => array:2 [ "titulo" => "References" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "bibs0005" "bibliografiaReferencia" => array:24 [ 0 => array:3 [ "identificador" => "bib1" "etiqueta" => "1." "referencia" => array:1 [ 0 => array:1 [ "referenciaCompleta" => "Health Protection Agency and Health Protection Scotland new influenza A(H1N1) investigation teams. Epidemiology of new influenza A(H1N1) in the United Kingdom, April – May 2009. Euro Surveill. 2009; 14(19):pii=19213. 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