Impact of mandatory vaccination against serogroup C meningococci in targeted and non-targeted populations in France.

Mandatory vaccination correlated with a significant decrease among the <2 years old and a decreasing trend among the 2–14 years old group but not among 15–25 years of age.

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One year after the implementation of mandatory vaccination that included 11 vaccines for children under 2 years old, vaccination has significantly increased in these children and an increasing trend was also observed for other vaccines not concerned by mandatory vaccination 10 .

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