Prevalence of antibodies against canine parvovirus (CPV), canine diste
mper virus (CDV), and canine adenovirus type 1 (CAV) were determined a
mong 152 coyotes (Canis latrans) at the Naval Petroleum Reserves (NPRC
; California, USA) from 1985 to 1990. Overall prevalence of antibodies
to CPV. CDV, and CAV was 66%, 37%, and 68% respectively. Prevalence o
f CPV and CDV varied significantly among years. Antibody prevalence di
d not differ between sexes for any disease, but did vary significantly
among age classes and was lowest for pups (<1-y-old). Among pups, ant
ibody prevalence increased with age for all three diseases. Coyotes ar
e a potential source of viral exposure for endangered San Joaquin kit
foxes (Vulpes macrotis mutica), but variation in coyote abundance did
not appear to influence antibody prevalence among kit foxes.