Haemophilus influenza type B is a kind of haemophilus influenza with extremely strong invasiveness. Among all the serious infections caused by haemophilus influenzas, almost 90% were caused by haemophilus influenza type B. According to the researches in recent years, HIB has become the first bacteria that will cause diseases on the respiratory tracts of children in China. It mainly causes lower respiratory infection and pneumonia. After infected by HIB, the risk of getting invasive diseases is related to one’s HIB immune level. The prevalence rate of HIB antibody in infants is quite high, which mainly comes from mothers. Antibody titer …
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