[Study on blood filariosis of dog in tonekabon]

To determine the prevalence and species ofblood filaria of dog in Tonekabon.Cross sectional study.80 dogs.After clinical examinations and recording ofnecessary information [age, sex and breed], blood sampleswere collected from cephalic or saphen vein and examinedby modified knott method.Analysis of variance [ANOVA].Out of 80, 14 dogs [17.5%] were infected withmicrofilaria. In this regard, about 15%, 1.25% and 1.25% ofinfectionswere Dirifilariaimmitis, microfilaria ofdipetalonemareconditumandmixedinfection, respectively. Infection showed no correlation with sex, age, breed and rates of breathing.Because of the possibility ofinfection in human by this species, our findings recommendkilling of stray dogs and treatment of infected ones