What disease is caused by the nematode Dirofilaria immitis?

Dirofilaria immitis is a parasitic nematode that primarily affects dogs, causing a disease commonly known as heartworm disease. This condition results from the transmission of the parasite through the bite of an infected mosquito. Once inside the host, the larvae grow into adult worms that live in the heart and pulmonary blood vessels, leading to severe cardiovascular and respiratory problems.

Heartworm disease can result in significant health issues for infected animals, including heart failure and lung disease. If left untreated, it can be fatal. The presence of Dirofilaria immitis is specifically associated with this condition, distinguishing it from other diseases caused by different pathogens or organisms.

Understanding this relationship is crucial for pet owners and veterinarians, as heartworm prevention is a key aspect of canine healthcare in areas where the disease is endemic. This makes heartworm disease a direct and specific consequence of Dirofilaria immitis infection.