dirofilaria immitis in red foxes in illinois. | dirofilaria immitis was found in 8 of 225 (3.6%) red foxes (vulpes vulpes) collected from fur buyers and trappers in bond, clinton, dekalb, edgar, ford, jasper, moultrie, and richland counties, illinois. infections ranged from 1 to 23 nematodes per fox. the finding of d. immitis in red foxes represents a new host record for the state. | 1980 | 7431521 |