Surveillance of hospitalised patients with influenza-like illness during pandemic influenza A(H1N1) season in Sicily, April 2009 - December 2010

F. Tramuto, C. M. Maida, F. Bonura, A. M. Perna, S. Puzelli, M. A. de Marco, I. Donatelli, L. Aprea, A. Firenze, A. Arcadipane, U. Palazzo, F. Vitale

Research output: Contribution to journalArticlepeer-review

Abstract

This paper describes the epidemiology of hospitalised cases with influenza-like illness (ILI) and laboratoryconfirmed influenza A cases in Sicily (Italy) during the 2009 influenza pandemic. The first ILI case diagnosed as infected with pandemic influenza A(H1N1)2009 in Sicily was reported in June 2009 and it rapidly became the dominant circulating strain. In the period from 30 April 2009 through 31 December 2010, a total of 2,636 people in Sicily were hospitalised for ILI and 1,193 were laboratory-confirmed for influenza A. Basic demographic and clinical information for all hospitalised patients was collected and population mortality rates (PMRs) and case fatality ratios (CFRs) were calculated. The median age of hospitalised patients infected with pandemic influenza A(H1N1)2009 was significantly lower than that of hospitalised ILI cases in general (18.0 vs. 32.1 years; p

Original languageEnglish
JournalEuro surveillance : bulletin européen sur les maladies transmissibles = European communicable disease bulletin
Volume16
Issue number35
Publication statusPublished - Sept 1 2011

ASJC Scopus subject areas

  • Epidemiology
  • Public Health, Environmental and Occupational Health
  • Virology

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