Infant vaccination has greatly reduced the occurrence of meningitis caused by Haemophilus influenzae tybe b (Hib).

Question

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The vaccination against Hib has been highly effective in reducing the incidence of meningitis caused by this bacteria. According to the World Health Organization (WHO), the use of Hib vaccines has prevented an estimated 7 million cases of severe disease and 600,000 deaths worldwide since their introduction in the 1990s.

Infant Vaccination Has Greatly Reduced the Occurrence of Meningitis Caused