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vol.84 número5Control y vigilancia en fronteras: Papel de sanidad exterior durante las fases de contención de la pandemia (H1N1) 2009Vigilancia individualizada de los casos iniciales de infección por gripe pandémica (H1N1) 2009 en España, abril-junio 2009 índice de autoresíndice de materiabúsqueda de artículos
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Revista Española de Salud Pública

versión On-line ISSN 2173-9110versión impresa ISSN 1135-5727


MAYORAL CORTES, José María et al. Infection by the pandemic virus (H1N1) 2009 in Andalusia. Rev. Esp. Salud Publica [online]. 2010, vol.84, n.5, pp.517-528. ISSN 2173-9110.

In April 2009, in response to the WHO's alert due to the existence of human infection cases with a new AH1N1 influenza virus, known as swine flu, Andalusian Health Authorities trigger an specific action plan. The surveillance actions developped provided us with appropriate clinical, epidemiological and virological characteristics of the disease. During the first few days, contingency plans were set up based on epidemiological surveillance and outbreak control measures were adopted through early alert and rapid response systems. After phase 6 was declared, influenza sentinel and severe cases surveillance were used in order to plan healthcare services, to reduce transmission and to identify and protect the most vulnerable population groups. Behaviour of pandemic influenza in Andalusia was similar to that observed in the rest of the world. Atack rate was similar to a seasonal flu and the peak was reached at the 46th/2009 week. Most of them were mild cases and affected particularly to young people. The average age of hospitalised patients was 32. Prior pulmonary disease, smoking and morbid obesity (BMI>40) were the most common pathologies and risk factors in severe cases. An impact scenario of pandemic wave in Andalusia, with an expected attack rate from 2 to 5%, was prepared considering watt observed in the southern hemisphere. Characteristics of the epidemic concerning its extent, severity and mortality rate were adjusted to this scenario.

Palabras clave : Epidemiology; Sentinel surveillance; Disease Outbreaks; Influenza A virus; H1N1 subtype; Grippe; Influenza; human; Spain.

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