title: Detection of influenza virus  subtype A by polymerase chain  reaction: WHO external quality  assessment programme  summary analysis, 2014.
mesh_terms: D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000302:isolation & purification; D053122:Influenza A Virus, H3N2 Subtype / Q000302:isolation & purification; D053124:Influenza A Virus, H5N1 Subtype / Q000302:isolation & purification; D064766:Influenza A Virus, H7N9 Subtype / Q000302:isolation & purification; D009980:Influenza A virus / Q000302:isolation & purification*; D009981:Influenza B virus / Q000302:isolation & purification; D007251:Influenza, Human / Q000175:diagnosis / Q000821:virology*; D007753:Laboratories / Q000592:standards; D059021:Laboratory Proficiency Testing / Q000379:methods / Q000592:standards*; D009439:Neuraminidase / Q000037:antagonists & inhibitors / Q000235:genetics; D016133:Polymerase Chain Reaction / Q000379:methods / Q000592:standards*; D062486:Public Health Surveillance / Q000379:methods*; D014944:World Health Organization
chemical_list: D009439:Neuraminidase