| prevalence of dirofilaria immitis and dipetalonema reconditum infections in missouri dogs. | the prevalence of dirofilaria immitis and dipetalonema reconditum infections in missouri dogs was investigated by means of a statewide veterinary mail survey and a study of shelter dogs from central missouri and mississippi river communities. the veterinary survey revealed microfilariae of d immitis in 447 of 11,823 (3.8%) dogs, microfilariae of d reconditum in 14 (0.1%), and microfilariae of both species in 8 (less than 0.1%). of 493 shelter dogs examined, using the modified knott test, 23 (4. ... | 1981 | 7196395 |