Definition: Strains of Neisseria meningitidis which, in the United States, causes disease in mostly adults and the elderly. Serogroup Y strains are associated with PNEUMONIA.
infection: coord IM with MENINGITIS, MENINGOCOCCAL (IM) or, if not meningitis, MENINGOCOCCAL INFECTIONS (IM)
Other names Meningococci, Serogroup Y; Meningococcus, Serogroup Y