title: Flu sunday for the elderly.
mesh_terms: D000368:Aged; D005500:Follow-Up Studies; D006801:Humans; D007114:Immunization; D007252:Influenza Vaccines / Q000009:adverse effects; D007251:Influenza, Human / Q000517:prevention & control*; D008875:Middle Aged; D014768:Virginia
chemical_list: D007252:Influenza Vaccines