All the 14 dogs had microfilariae of Dirofilaria immitis in the blood, detected by a filtration test (Difil - test). (priory.com)
Until a short while ago, infections with the parasite Dirofilaria repens was regarded as a classical traveler's disease in Austria. (sciencedaily.com)
The full study, A. Ray Dillon, et al., «Effect of pre-cardiac and adult stages of Dirofilaria immitis in pulmonary disease of cats: CBC, bronchial lavage cytology, serology, radiographs, CT images, bronchial reactivity, and histopathology.» (zoetisus.com)