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J Am Vet Med Assoc. 1990 Jun 15;196(12):1962-4.

Seroepidemiologic survey of antibodies to Ehrlichia equi in horses of northern California.

Author information

1
Department of Medicine, School of Veterinary Medicine, University of California, Davis 05616.

Abstract

The prevalence of antibodies to Ehrlichia equi in horses from the foothill regions of northern California and from the Sacramento valley (non-foothill area) was determined, using an indirect fluorescent antibody test. Horses from foothill regions had a higher prevalence of seropositivity (10.4%) and higher titer (1:10 to 1:80) than did those from non-foothill regions (3.1%; titer less than or equal to 1:10). Fifty percent of healthy horses on a foothill farm enzootic for E equi had titer to E equi, suggesting that infection with E equi can be subclinical. Six veterinarians surveyed from northern California diagnosed clinical E equi infection in 38 horses during 1985-1986 based on clinical signs of infection and observation of E equi inclusion bodies in neutrophils on blood smears.

PMID:
2195000
[Indexed for MEDLINE]

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