title: H7N9 virus is more transmissible and harder to detect than H5N1, say experts.
authors.forename: Jane
authors.initials: J
authors.lastname: Parry
mesh_terms: D000818:Animals; D001717:Birds; D002681:China / Q000453:epidemiology; D006801:Humans; D053124:Influenza A Virus, H5N1 Subtype / Q000302:isolation & purification*; D005585:Influenza in Birds / Q000635:transmission* / Q000821:virology; D007251:Influenza, Human / Q000635:transmission* / Q000821:virology