TABLE 3

Incidence of Meningococcal Disease by Serogroup in Persons Aged 18–24 Years and RR by College Student Status in the United States From 2014 to 2016

Age GroupAll CasesSerogroup BSerogroups C, W, or Y
Total CasesAverage Annual IncidenceaRR (95% CI)Total CasesAverage Annual IncidenceaRR (95% CI)Total CasesAverage Annual IncidenceaRR (95% CI)
All 18- to 24-year-olds1630.1741880.0940390.0416
 College student830.23151.67 (1.23–2.27)600.16733.54 (2.21–5.41)100.02790.56 (0.27–1.14)
 Noncollege student800.1384280.0485290.0502
18- to 19-year-olds730.2871480.188880.0315
 College student500.37772.00 (1.22–3.28)370.27953.10 (1.58–6.07)60.04532.76 (0.56–13.78)
 Noncollege student230.1888110.090320.0164
20- to 21-year-olds520.1965280.1058100.0378
 College student290.23331.42 (0.82–2.46)220.17704.14 (1.68–10.20)30.02410.48 (0.13–1.87)
 Noncollege student230.163960.042870.0499
22- to 24-year-olds380.0910120.0287210.0503
 College student40.03930.36 (0.13–1.03)10.00980.28 (0.04–2.18)10.00980.16 (0.02–1.15)
 Noncollege student340.1077110.0348200.0634
  • a Cases per 100 000 population.