Neisseria meningitidis, Serogroup B

**Definition:** Strains of Neisseria meningitidis which are the most common ones causing infections or disease in infants. Serogroup B strains are isolated most frequently in sporadic cases, and are less common in outbreaks and epidemics.

**Tree numbers:** - B03.440.400.425.550.550.641.710 - B03.660.075.525.520.500.710

**Synonyms:** - Meningococci, Serogroup B - Meningococcus, Serogroup B