title: I just had a pneumonia shot. How long will it protect me?
mesh_terms: D000367:Age Factors; D006801:Humans; D022242:Pneumococcal Vaccines / Q000008:administration & dosage* / Q000276:immunology; D011014:Pneumonia / Q000276:immunology / Q000517:prevention & control*; D013997:Time Factors
chemical_list: D022242:Pneumococcal Vaccines