title: Vitamin D supplementation could reduce the risk of type A influenza infection and subsequent pneumonia.
authors.forename: William B
authors.initials: WB
authors.lastname: Grant
mesh_terms: D006801:Humans; D009980:Influenza A virus / Q000302:isolation & purification / Q000472:pathogenicity*; D007251:Influenza, Human / Q000150:complications* / Q000517:prevention & control* / Q000821:virology; D018410:Pneumonia, Bacterial / Q000517:prevention & control*; D018570:Risk Assessment; D014807:Vitamin D / Q000627:therapeutic use*
chemical_list: D014807:Vitamin D