title: Follow-up study: protective immunization in the elderly.
mesh_terms: D000368:Aged; D004165:Diphtheria / Q000517:prevention & control*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007114:Immunization; D008297:Male; D013742:Tetanus / Q000517:prevention & control*; D013745:Tetanus Toxoid / Q000008:administration & dosage
chemical_list: D013745:Tetanus Toxoid