Sentences with phrase «results of the microfilaria»

Not exact matches

Heartworm tests can not show a positive result until the tiny microfilaria reach 6 - 7 months of development.

The preventative won't affect antigen test results and it can prevent the spread of heartworm in the shelter and prevent infection in an animal, even if microfilaria (heartworm larvae) are already present in the bloodstream.

Diagnosis of canine dirofilariosis in animals which originate from a low - endemic region is difficult for 3 main reasons: 1) possible absence of circulating microfilariae (occult disease), 2) high frequency of a low number of adults, which in turn produces false negative results, using either ELISA or latex agglutination test, 3) possible false sero - positive results, due to cross-reaction with adult antigens of Dirofilaria (Nochtiella) repens (Schrey, 1996), the agent of subcutaneous dirofilariasis causing chronic pruritic dermatitis in dogs (Tarello, 1999).

As a result, microfilariae, produced by adult female heartworms in the presence of adult male heartworms, are uncommon in cats.

· The dog has been exposed to medications that happen to kill the microfilaria being produced, but has not had an affect on the adult worms or the medication has resulted in the infertility of the female adult worms.