Dog Heartworm Infection
Dog heartworm infection is caused by the roundworm Dirofilaria immitis, which is transmitted to people by infected mosquitoes.
Dog heartworm infection is a filarial worm infection that rarely affects people because the worms cannot complete their life cycle in people and do not survive for very long in people. The infection can be transmitted when an infected mosquito bites a person and deposits larvae of the worm in the bite. The larvae usually die in the skin. However, sometimes the larvae live long enough to travel through the blood to the lungs and die there, forming a lump (nodule), which may be seen on a chest x-ray.