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1 April 1998 Increasing Prevalence of Canine Heartworm in Coyotes from California
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Abstract

Thirty-seven subadult and adult coyotes (Canis latrans), collected August 1992 through December 1996 from a coastal foothill area in northern California (USA), were examined for adult heartworm (Dirofilaria immitis). During 1992 through 1993, at the end of a 6 yr drought, none of four coyotes examined were infected with heartworms. However, during 1994 through 1996, after the drought had ended, prevalences were 91% in 23 adult coyotes and 40% in 10 subadult coyotes. Heartworm intensity did not differ by sex of coyote, and averaged (±SE) 19.4 ± 3.8 among adults; one subadult had >238 heartworms. The prevalence and intensity of heartworm infection in coyotes reported here for 1994 through 1996 are the highest reported anywhere in the United States.

Sacks: Increasing Prevalence of Canine Heartworm in Coyotes from California
Benjamin N. Sacks "Increasing Prevalence of Canine Heartworm in Coyotes from California," Journal of Wildlife Diseases 34(2), 386-389, (1 April 1998). https://doi.org/10.7589/0090-3558-34.2.386
Received: 14 March 1997; Published: 1 April 1998
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