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Table 4 PHF-positive sera from naturally-infected horses and negative sera.

From: Neorickettsia risticii surface-exposed proteins: proteomics identification, recognition by naturally-infected horses, and strain variations

Horse IDa

Clinical signsb

Location

Year

IFA titer

1 (OH10-1)

A, F, De, Deh, C

Johnstown, OH

2010

> 1:10,240

2 (OH10-2)

A, F, De, C, L, Et, EUTH

Grove City, OH

2010

> 1:10,240

3

A, F, De, Deh, L, Et, EUTH

Richwood, OH

2010

> 1:10,240

4

A, De, F

Galloway, OH

2010

> 1:10,240

5

A, De, Deh, F, C, L

Dayton, OH

2010

> 1:10,240

6

A, F, C, L, EUTH

Loveland, OH

2010

> 1:10,240

7

U

Indiana

2010

1:5120

8

A, Di, De, Deh, F, L

Troy, OH

2008

1:1280

9

U

Kentucky

2008

1:1280

10

U

Indiana

2008

1:1280

11

A, F, Di, De, Deh

Columbus, OH

2008

1:1280

12

A, F, Di

Cattaraugus, NY

2010

1:640

13

U

Indiana

2008

1:640

14

A, F, C

Oak Hill, OH

2008

1:80

15

A, F

Utica, OH

2008

1:80

N1

U

New Jersey

2010

< 1:20

N2

U

Ohio

2010

< 1:20

N3

U

New Jersey

2010

< 1:20

  1. aSera 1 and 2 are from the same horses as buffy coats OH10-1 and OH10-2, respectively, as identified in Table 1.
  2. bA, anorexia; F, fever; De, depression; Deh, dehydration; C, colic; L, laminitis; Et, endotoxemia; EUTH, euthanized; U, Unknown; Di, diarrhea.