Outbreak of 2009 pandemic influenza A(H1N1) in a Finnish garrison--a serological survey

Euro Surveill. 2010 Nov 11;15(45):19709.

Abstract

In September 2009, an outbreak of 2009 pandemic influenza A(H1N1) took place in a Finnish garrison. In November 2009, we performed a serological survey among 984 recruits undergoing their military service at the garrison and related the results to self-reported upper respiratory tract infection (URTI) with or without fever. Of 346 volunteers who donated a blood sample, 169 (49%) had pandemic influenza A(H1N1) virus-specific antibodies. Of those, 84 (50%) reported no recent history of URTI, suggesting that a major part of those infected with pandemic influenza A(H1N1) virus may be asymptomatic.

MeSH terms

  • Adult
  • Antibodies, Viral / blood*
  • Cross Reactions
  • Female
  • Fever / etiology
  • Finland / epidemiology
  • Hemagglutination Inhibition Tests
  • Humans
  • Influenza A Virus, H1N1 Subtype* / genetics
  • Influenza A Virus, H1N1 Subtype* / immunology
  • Influenza, Human / epidemiology*
  • Influenza, Human / immunology
  • Influenza, Human / virology
  • Male
  • Military Personnel*
  • Pandemics / statistics & numerical data*
  • Prevalence
  • Respiratory Tract Infections / epidemiology
  • Reverse Transcriptase Polymerase Chain Reaction
  • Self Report
  • Seroepidemiologic Studies
  • Surveys and Questionnaires
  • Young Adult

Substances

  • Antibodies, Viral