title: Serogroup Y meningococcal disease--Illinois, Connecticut, and selected areas, United States, 1989-1996.
abstract: Neisseria meningitidis is a leading cause of bacterial meningitis and sepsis in the United States. N. meningitidis is classified into serogroups based on the antigenic characteristics of its capsular polysaccharide. During 1989-1991 in the United States, serogroups B and C accounted for most (91%) of invasive meningococcal disease while serogroup Y caused < 5%; however, during 1992-1995, serogroup Y accounted for an increasing proportion of meningococcal disease. This report describes the epidemiology of serogroup Y meningococcal disease (SYMD) during 1991-1996 in Illinois and Connecticut, which conducted enhanced surveillance through active reviews of clinical records and in areas participating in active laboratory-based surveillance during 1989-1995. The findings indicate a substantial increase in the proportion of meningococcal disease caused by N. meningitidis serogroup Y since 1989.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D003237:Connecticut / Q000453:epidemiology; D005260:Female; D006801:Humans; D007087:Illinois / Q000453:epidemiology; D008297:Male; D008589:Meningococcal Infections / Q000453:epidemiology* / Q000382:microbiology; D009345:Neisseria meningitidis / Q000145:classification* / Q000302:isolation & purification; D011159:Population Surveillance; D012703:Serotyping; D014481:United States / Q000453:epidemiology