title: [Simultaneous occurrence of influenza B and influenza A(H1N1) virus in the winter of 1983/84].
mesh_terms: D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D009980:Influenza A virus / Q000302:isolation & purification*; D009981:Influenza B virus / Q000302:isolation & purification*; D009426:Netherlands; D012141:Respiratory Tract Infections / Q000382:microbiology*
vernacular_title: Gelijktijdig optreden van influenza B- en influenza A(H1N1)-virus in de winter 1983/'84.