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Volume 12, Number 3—March 2006

Dispatch

Canine Leptospirosis, United States, 2002–2004

George E. Moore*Comments to Author , Lynn F. Guptill*, Nita W. Glickman*, Richard J. Caldanaro*, David Aucoin†, and Lawrence T. Glickman*
Author affiliations: *Purdue University, West Lafayette, Indiana, USA; †VCA Antech, Los Angeles, California, USA

Main Article

Table

Seropositivity for Leptospira serovars in dogs by the microscopic agglutination test using canine sera, 2002–2004*

Serovar Total tests (n) Positive test results
>400
>800
>1,600
n % (95% CL) n % (95% CL) n % (95% CL)
Autumnalis 11,621 1,059 9.11 (8.60,9.65) 755 6.50 (6.06,6.96) 549 4.72 (4.35,5.13)
Grippotyphosa 22,929 1,458 6.36 (6.05,6.68) 1,132 4.94 (4.66,5.23) 908 3.96 (3.71,4.22)
Bratislava 11,663 499 4.28 (3.92,4.66) 428 3.67 (3.34,4.03) 357 3.06 (2.76,3.39)
Pomona 22,937 906 3.95 (3.70,4.21) 716 3.12 (2.90,3.35) 575 2.51 (2.31,2.72)
Canicola 22,377 669 2.99 (2.77,3.22) 317 1.42 (1.27, 1.58) 134 0.60 (0.50,0.71)
Icterohaemorrhagiae 22,935 356 1.55 (1.40,1.72) 179 0.78 (0.67, 0.90) 79 0.34 (0.27,0.43)
Hardjo 22,937 40 0.17 (0.12,0.24) 22 0.10 (0.06, 0.15) 10 0.04 (0.02,0.08)

*CL, confidence limit.

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