Pneumonia in old age; active immunization against pneumonia with pneumonococcus polysaccharide; results of a six year study.
KAUFMAN
P
P
D000368:Aged; D000369:Aged, 80 and over; D004194:Disease; D006801:Humans; D007109:Immunity; D011014:Pneumonia; D011134:Polysaccharides; D013296:Streptococcus pneumoniae; D014611:Vaccination
D011134:Polysaccharides
OLD AGE/diseases; PNEUMOCOCCI/immunity; PNEUMONIA/immunity; SACCHARIDES