title: [Infection by the pandemic virus (H1N1) 2009 in Andalusia].
abstract: 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.
authors.affiliation: Consejería de Salud, Junta de Andalucía, Sevilla, Spain. josem.mayoral.sspa@juntadeandalucia.es
authors.forename: José María
authors.initials: JM
authors.lastname: Mayoral Cortés
authors.forename: Josefa
authors.initials: J
authors.lastname: Ruiz Fernández
authors.forename: Jerónimo
authors.initials: J
authors.lastname: Pachón Díaz
authors.forename: José María
authors.initials: JM
authors.lastname: Navarro Marí
authors.forename: Luz
authors.initials: L
authors.lastname: Puell Gómez
authors.forename: Esteban
authors.initials: E
authors.lastname: Pérez Morilla
authors.forename: Virtudes
authors.initials: V
authors.lastname: Gallardo García
authors.forename: Enric
authors.initials: E
authors.lastname: Duran Pla
authors.forename: Juan Carlos
authors.initials: JC
authors.lastname: Fernández Merino
authors.forename: Ignacio
authors.initials: I
authors.lastname: Pajares Bernaldo-Quirós
authors.forename: Francisco
authors.initials: F
authors.lastname: Murillo Cabeza
authors.forename: M
authors.initials: M
authors.lastname: Pérez Ruiz
authors.forename: Javier
authors.initials: J
authors.lastname: Guillén Enríquez
authors.forename: Juan Carlos
authors.initials: JC
authors.lastname: Carmona
authors.forename: Gloria
authors.initials: G
authors.lastname: Andérica Frías
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000453:epidemiology* / Q000517:prevention & control*; D008875:Middle Aged; D058873:Pandemics; D011159:Population Surveillance; D013030:Spain / Q000453:epidemiology; D013997:Time Factors; D055815:Young Adult