From the Centers for Disease Control and Prevention. Haemophilus influenzae invasive disease among children aged <5 years--California, 1990-1996.
D002140:California / Q000453:epidemiology; D002675:Child, Preschool; D006192:Haemophilus Infections / Q000453:epidemiology*; D006193:Haemophilus influenzae; D006801:Humans; D015994:Incidence; D007223:Infant