Haemophilus influenzae declining among young?
Marwick
C
C
D001428:Bacterial Vaccines; D002675:Child, Preschool; D006192:Haemophilus Infections / Q000453:epidemiology* / Q000517:prevention & control; D006193:Haemophilus influenzae / Q000276:immunology; D006801:Humans; D007223:Infant; D014481:United States / Q000453:epidemiology
D001428:Bacterial Vaccines