Neisseria meningitidis serogroup W 135 disease in adults

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Abstract
Five adults had infection caused by N. meningitidis serogroup W135. Their ages ranged from 19-74 yr. The spectrum of illness included meningitis, pneumonia and acute peritonitis. Two patients had systemic lupus erythematosus and were receiving corticosteroids at the time of their infection. One patient died of fulminant meningococcemia. All isolates were sensitive to sulfonamides. The recent increase in the national (USA) incidence of N. meningitidis serogroup W135 infections emphasizes the need for continuing surveillance and justifies its inclusion in a polyvalent meningococcal vaccine.