title: Severe haemoptysis associated with viral tracheitis.
mesh_terms: D005260:Female; D006469:Hemoptysis / Q000209:etiology*; D006801:Humans; D009980:Influenza A virus; D007251:Influenza, Human / Q000150:complications*; D008875:Middle Aged; D014136:Tracheitis / Q000150:complications* / Q000209:etiology