November 1988. Pneumococcal vaccine--an increased emphasis.
D000368:Aged; D001428:Bacterial Vaccines; D006266:Health Education; D006801:Humans; D008396:Maryland; D013290:Streptococcal Infections / Q000517:prevention & control; D013296:Streptococcus pneumoniae / Q000276:immunology*; D014611:Vaccination
D001428:Bacterial Vaccines