title: Influenza A(H1N1)v virus infections in Belgium, May-June 2009.
abstract: In response to the ongoing influenza A(H1N1)v pandemic, first detected in North America in April 2009, Belgium has set up an active surveillance system for influenza-like illness among travellers returning from affected areas. This communication describes the clinical and epidemiological features of the first 43 laboratory-confirmed cases in Belgium.
authors.affiliation: Scientific Institute of Public Health, Brussels, Belgium. s.quoilin@iph.fgov.be
mesh_terms: D000328:Adult; D017677:Age Distribution; D001530:Belgium / Q000453:epidemiology; D004196:Disease Outbreaks / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D017053:Infection Control / Q000379:methods; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000175:diagnosis / Q000453:epidemiology* / Q000517:prevention & control / Q000821:virology; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance / Q000379:methods*; D055815:Young Adult