pus. Postmortem examination may also reveal small, white, and threadlike worms less than 3 cm in length in the lung tissue. Diagnosis Postmortem examination may also reveal small, white, and threadlike worms less than 3 cm in length in the lung tissue. Postmortem examination will also reveal nodular lesions 2 centimeters in length in the lungs; the nodules may be filled with white pus. The presence of eggs on fecal samples can also confirm an M. capillaris infections. Treatment and Prevention Treatment of sheep is normally unnecessary, because they are not usually affected by the infection. Ivermectin and benzimidazole can be used to kill the adult worms in goats. Daily doses of fenbendazole or albendazole for 1-2 weeks will destroy all life stages in goats. Prevention and control of M. capillaris is difficult, because the snail and slug intermediate hosts are virtually everywhere, and the parasite can survive in the intermediate host for years. However, effective pasture drainage and use of chemicals may reduce snail and slug populations. References Veterinary helminthology Strongylida Nematodes described in 1889