Clinical Symptoms
Most cases of Capillaria aerophila infestation in dogs and cats are without serious clinical symptoms. Heavy infestations may result in inflammation of the respiratory tract (rhinitis, tracheitis or bronchitis), or secondary bacterial infections of the respiratory tract, including bronchopneumonia. These developments are usually characterized by a whistling sound when the animal breathes, frequent sneezing, or a deep, wheezing cough.
In humans, symptoms include coughing, fever, bronchitis, dypsnea (shortness of breath), blood in the saliva, and elevated levels of eosinophils in the blood (eosinophilia).
Most reports of C. aerophila in wildlife are simply parasite field surveys, and do not mention specific symptoms. However, the involvement of C. aerophila infestation and pneumonia, in addition to other parasites, in the death of an Opossum has been reported.
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