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Since Its Introduction in 1990,a Vaccine Administered to Children to Prevent

Question 9

Multiple Choice

Since its introduction in 1990,a vaccine administered to children to prevent infections by _____ has markedly decreased the number of cases of meningitis caused by this pathogen.


A) Rubella virus
B) Measles virus
C) Streptococcus pneumoniae
D) Haemophilus influenzae type b
E) Polio virus

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