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Table 1 Chicago urban classes with WNV human case rates from 2002

From: Association of West Nile virus illness and urban landscapes in Chicago and Detroit

Urban Class Brief Description Chicago with Land Cover of Illinois Chicago with National Land Cover Data
   % of tracts N WNV Population WNV per 100 K % of tracts N WNV Population WNV per 100 K
1 City, Low Income 31.8 99 (15.2%) 1,677,454 5.90 31.9 98 (15.1%) 1,526,551 6.42
2 City, High Income 15.8 25 (3.8%) 894,010 2.80 26.2 132 (20.3) 1,671,026 7.90
3 Inner Suburb 26.2 404 (62.2%) 1,777,327 22.78 26.4 363 (55.8%) 1,895,900 19.15
4 Outer Suburb 19.6 115 (17.6%) 1,819,621 6.32 11.1 50 (7.7%) 1,122,668 4.45
5 Urban No-man's 6.6 7 (1.1%) 112,456 6.22 4.4 7 (1.1%) 64,723 10.82
  OVERALL 100 650 (100.0%) 6,280,868 10.35 100 650 (100.0%) 6,280,868 10.35