Definition: Strains of Neisseria meningitidis responsible for most sporadic cases in teenagers and almost all outbreaks of disease in this age group. These strains are less common in infants.
infection: coord IM with MENINGITIS, MENINGOCOCCAL (IM) or, if not meningitis, MENINGOCOCCAL INFECTIONS (IM)
Other names Meningococci, Serogroup C; Meningococcus, Serogroup C