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Volume 16, Number 4—April 2010
Dispatch

Influenza Virus Transmission from Horses to Dogs, Australia

Peter D. KirklandComments to Author , Deborah S. Finlaison, Ellie Crispe, and Aeron C. Hurt
Author affiliations: Elizabeth Macarthur Agricultural Institute, Menangle, New South Wales, Australia (P.D. Kirkland, D.S. Finlaison); Warwick Farm Equine Centre, Warwick Farm, New South Wales, Australia (E. Crispe); World Health Organization Collaborating Centre for Reference and Research on Influenza, North Melbourne, Victoria, Australia (A.C. Hurt)

Main Article

Table

Clinical signs and serologic findings for 40 dogs exposed to equine influenza virus, Australia, October 2007*

Dog Breed Age/sex Clinical signs Day of sample collection
 PCR Titer
ELISA
 HI assay
1st 2nd 1st 2nd 3rd† 1st 2nd 3rd†
1 Cattle dog x 6 mo/F Cough 5 NS Neg 70 NA NA 64 NA NA
2 Whippet 6 mo/F Cough, inappetance, lethargy, nasal discharge 5 25 Neg 79 69 Neg 128 128 128
3 Rottweiler UK Cough, lethargy 10 25 Neg Neg 65 Neg Neg Neg Neg
4 Dalmation 3 y/MN Cough, inappetance, lethargy 11 NS Neg 74 NA NA 64 NA NA
5 Kelpi x 9.5 y/FN Cough, lethargy 12 26 Neg 66 74 NA 64 128 NA
6 Border collie 5 y/MN Inappetance, lethargy 13 27 Neg 60 75 Neg 64 32 64
7 Cattle dog 4.5 y/M Cough, lethargy 13 27 Neg 64 57 Neg 256 128 128
8 German shepherd 9 y/M Inappetance, lethargy 14 30 Neg Neg Neg NA Neg Neg NA
9 Jack Russell 9 y/MN Cough 14 30 Neg Neg 65 NA Neg Neg NA
10 Lowchen 2 y/MN Cough, inappetance, lethargy, nasal discharge 26 NS Neg Neg NA Neg Neg NA Neg
11 Cattle dog x 18 mo/F None 10 26 Neg 77 75 NA 64 64 NA
12 Fox terrier x poodle 15 y/FN None; lived with dog 4 11 NS Neg Neg Neg NA Neg Neg NA
13 Kelpie x 4 y/MN None 12 26 Neg 64 71 Neg 128 64 128
14 German shepherd 1.5 y/MN None 12 26 Neg 71 67 Neg 128 64 64
15 Kelpie x labrador 10 y/FN None 12 26 Neg 71 80 Neg 256 32 Neg
16 Cattle x kelpie 3 y/MN None 12 27 Neg 64 61 Neg 128 32 64
17 Unknown UK None 12 27 Neg 66 66 Neg 256 64 32
18 Border collie 1 y/M None 12 27 Neg 78 59 Neg 128 64 128
19 Jack Russell x 2.5 y/MN None 12 26 Neg 49 71 NA 32 16 NA
20 Greyhound 18 mo/F None 12 26 Neg Neg Neg NA 256 128 NA
21 Greyhound 2 y. M None 12 26 Neg Neg 55 NA Neg Neg NA
22 Greyhound 5 y/M None 12 25 Neg Neg Neg NA Neg Neg NA
23 Greyhound 18 mo/F None 12 25 Neg Neg Neg NA Neg Neg NA
24 Greyhound 18 m/F None 12 25 Neg Neg Neg NA Neg Neg NA
25 Cattle x kelpie 4 y/FN None 12 26 Neg 51 73 Neg 128 64 64
26 Poodle 5 mo/M None, lived with dog 7 13 27 Neg Neg Neg Neg 8 Neg Neg
27 Jack Russell 5 y/F None, lived with dog 5 13 27 Neg Neg Neg NA Neg Neg NA
28 Cattle x hunterway 4.5 y/M None 14 30 Pos Neg 50 NA Neg 64 NA
29 Border collie 4 y/FN None 15 NS Neg Neg NA NA Neg NA NA
30 Cattle 13 y/MN None 15 NS Neg Neg NA NA >32 NA NA
31 Jack Russell UK None 15 NS Neg 76 NA NA 64 NA NA
32 Rottweiler UK None 15 NS Neg 76 NA Inc 128 NA 128
33 Fox terrier 4 y/MN None 15 NS Neg 78 NA NA 32 NA NA
34 Labrador 13 y/FN None 15 NS Neg 51 NA NA 64 NA NA
35 x UK None 18 NS Neg Neg NA Neg Neg NA Neg
36 x UK None 18 NS Neg 73 NA Neg 64 NA 64
37 x UK None 18 NS Neg Neg NA Neg Neg NA Neg
38 x UK None 18 NS Neg Neg NA NA Neg NA NA
39 x UK None 18 NS Neg 67 NA Neg 256 NA 128
40 Poodle x 9 y/UK None, lived with dog 10 26 NS Neg Neg NA Neg Neg NA Neg

*HI, hemagglutination inhibition; x, cross-breed; NS, not sampled; neg, negative; NA, not applicable; pos, positive; UK, unknown; MN, male neutered; FN, female neutered.
†Samples collected ≈2 y after second sample.

Main Article

Page created: December 28, 2010
Page updated: December 28, 2010
Page reviewed: December 28, 2010
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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