title: Letter: "Fog fever" and lungworms.
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000276:immunology*; D004022:Dictyocaulus Infections / Q000276:immunology*; D006967:Hypersensitivity / Q000662:veterinary; D012131:Respiratory Insufficiency / Q000209:etiology / Q000662:veterinary