Table 3.

Serologic test results grouped by state and by category of hypothesized vector and reservoir abundances

Category (vector/re- servoir)aState% of cate- goryn (%)No. reactiveb (%)Titer
CP/CPConnecticut14.510011 (11.0)481 (128–2,048)c
New Jersey11.0761 (1.3)256
New York71.2491113 (23.0)419 (32–4,096)c
Maryland2.2151 (6.7)64
Wisconsin1.181 (12.5)128
Total690 (55.6)127 (18.4)
CP/UAFlorida28.4272 (7.4)362 (256–512)c
Georgia16.8160
North Carolina54.7520
Total95 (7.7)2 (2.1)
UA/CPIllinois32.1270
Ohio67.9570
Total84 (6.8)0 (0.0)
UA/UACalifornia8.6323 (9.4)323 (128–512)c
Colorado57.12124 (1.9)256 (32–256)c
Nevada7.3270
Utah27.01000
Total371 (30.0)7 (1.9)
  • a Estimated relative abundances ofI. scapularis and P. leucopus noveboracensis as hypothesized in the text. CP, common or present; UA, uncommon or absent.

  • b IFA titer of ≥32.

  • c GMT (range) of reactive samples.