title: Letter: Oral bacterial vaccine and colds.
mesh_terms: D001428:Bacterial Vaccines / Q000008:administration & dosage* / Q000627:therapeutic use; D003139:Common Cold / Q000517:prevention & control; D006801:Humans; D009666:Nose; D012141:Respiratory Tract Infections / Q000517:prevention & control*
chemical_list: D001428:Bacterial Vaccines