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Volume 13, Number 2—February 2007

Research

Subclinical Infection with Avian Influenza A H5N1 Virus in Cats

Michael Leschnik*Comments to Author , Joachim Weikel†, Karin Möstl*, Sandra Revilla-Fernández†, Eveline Wodak†, Zoltan Bagó†, Elisabeth Vanek†, Viviane Benetka*, Michael Hess*, and Johann G. Thalhammer*
Author affiliations: *University of Veterinary Medicine, Vienna, Austria; †Austrian Agency for Health and Food Safety Institute for Veterinary Disease Control, Mödling, Austria; Subclinical Avian Influenza H5N1 Infection in Cats;

Main Article

Table

Time scale of sampling and course of influenza A virus H5N1 hemagglutinating antibody titer in cats 1, 2, and 4, Austria, 2006*

DayTimeline eventsNo. pharyngeal swabsNo. rectal swabsNo. blood samplesH5N1 antibody titer
1
H5N1 virus–positive swan dies




4
All poultry culled (38); 13 positive




8
3 cats positive
40



15
All cats negative
34



22
Quarantine starts
160
160
14
Cat 1, 64
Cat 2, negative
Cat 4, ND
29
Examination under anesthesia
All cats (164)
164
164
Cat 1, 128
Cat 2, negative
Cat 4, 256
36



28
Cat 1, 128
Cat 2, negative
Cat 4, ND
50Cats 1 and 4 humanely killed for necropsyAll cats (155)Cat 1, 256
Cat 4, 256

*ND, not done.

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