Acceptance and efficacy of pneumococccal vaccine.
D001291:Attitude of Health Personnel; D001428:Bacterial Vaccines / Q000009:adverse effects; D002675:Child, Preschool; D006801:Humans; D011008:Pneumococcal Infections / Q000209:etiology / Q000517:prevention & control; D013296:Streptococcus pneumoniae; D014481:United States
D001428:Bacterial Vaccines