title: Introduction: Expanding the influenza vaccination season.
authors.forename: William
authors.initials: W
authors.lastname: Schaffner
mesh_terms: D007722:Health Knowledge, Attitudes, Practice; D006297:Health Services Accessibility; D006801:Humans; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000517:prevention & control*; D014611:Vaccination
chemical_list: D007252:Influenza Vaccines