title: An update on the influenza vaccine shortage.
mesh_terms: D006801:Humans; D007252:Influenza Vaccines / Q000592:standards / Q000600:supply & distribution*; D007251:Influenza, Human / Q000517:prevention & control; D017410:Practice Guidelines as Topic; D012621:Seasons; D014611:Vaccination / Q000592:standards*; D014903:West Virginia
chemical_list: D007252:Influenza Vaccines