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Meningococcal Disease—Information for Teens and College Students

Meningococcal disease is caused by a bacterium called Neisseria meningitides (often called meningococcus). There are different serogroups (types) of meningococcus. The serogroups that most commonly cause disease worldwide are A, B, C, W, and Y. Serogroups B, C, and Y most commonly cause disease in the United States.

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