Heartworm prevalence in dogs versus cats: Multiple diagnostic modalities provide new insights


  • Prevalence of adult heartworm (HW) infection was 4 % in cats and 28 % in dogs.
  • Combining antigen and antibody testing led to an overall 19 % positive cats.
  • Prevalence did not differ between dogs and cats with added feline antibody testing.
  • Dirofilaria repens microfilariae were identified in one dog and one cat.
  • Acanthocheilonema reconditum microfilariae were identified in four dogs.