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. 2016 Jan 6;94(1):52–60. doi: 10.4269/ajtmh.15-0540

Table 2.

The number of reported cases and the reported incidence rate (IR) per million person-years by state for Ehrlichia chaffeensis and Ehrlichia ewingii, 2008–2012

State E. chaffeensis E. ewingii
No. of cases (rate*) No. of cases (rate*)
Alabama 45 (1.9) 0 (0)
Alaska NN NN
Arizona 0 (0) 0 (0)
Arkansas 283 (19.4) 0 (0)
California 5 (0.03) 0 (0)
Colorado NN NN
Connecticut 2 (0.1) 0 (0)
Delaware 89 (19.8) 5 (1.1)
District of Columbia NN NN
Florida 69 (0.7) 0 (0)
Georgia 104 (2.1) 1 (0.02)
Hawaii NN NN
Idaho NN NN
Illinois 138 (2.2) 1 (0.02)
Indiana 4 (0.1) 0 (0)
Iowa NN NN
Kansas 71 (5) 1 (0.1)
Kentucky 87 (4) 0 (0)
Louisiana 2 (0.1) 1 (0.04)
Maine 10 (1.5) 0 (0)
Maryland 183 (6.3) 2 (0.1)
Massachusetts 55 (1.7) 0 (0)
Michigan 18 (0.4) 0 (0)
Minnesota 50 (1.9) 2 (0.1)
Mississippi 14 (0.9) 0 (0)
Missouri 788 (26.3) 33 (1.1)
Montana NN NN
Nebraska 8 (0.9) 0 (0)
Nevada 0 (0) 0 (0)
New Hampshire 18 (2.7) 0 (0)
New Jersey 326 (7.4) 0 (0)
New Mexico NN NN
New York City 35 (0.9) 0 (0)
New York State 250 (4.5) 0 (0)
North Carolina 374 (7.8) 0 (0)
North Dakota 0 (0) 0 (0)
Ohio 40 (0.7) 1 (0.02)
Oklahoma 580 (30.9) 0 (0)
Oregon 0 (0) 0 (0)
Pennsylvania 27 (0.4) 0 (0)
Rhode Island 43 (8.2) 0 (0)
South Carolina 12 (0.5) 1 (0.04)
South Dakota 1 (0.2) 0 (0)
Tennessee 309 (9.7) 5 (0.2)
Texas 43 (0.3) 0 (0)
Utah 0 (0) 0 (0)
Vermont 1 (0.3) 0 (0)
Virginia 432 (10.8) 2 (0.05)
Washington 1 (0.05) 0 (0)
West Virginia 5 (0.5) 0 (0)
Wisconsin 91 (3.2) 0 (0)
Wyoming 0 (0) 0 (0)

The number of incident cases is from the Nationally Notifiable Diseases Surveillance System and the number of person-years at risk is from the U.S. Census Bureau, 2008–2012. States where the disease was not notifiable for the duration of 2008–2012 are designated as “NN.”

*

IR per million persons per year.