[Dirofilariasis in the Moscow Region, a low disease transmission risk area].

The spread of canine and human dirofilariasis was first studied in the Moscow Region, a low disease transmission risk area. D.repens infestation was found to have a tendency to increase in Moscow residents with the imported cases being predominant.

[To the detection of the trematode mesocercariae Alaria alata in the blood of domestic dogs and cats].

Blood samples taken from 2128 domestic dogs and 543 cats in Moscow and the Moscow Region were studied by the concentration method using distilled water. The studies revealed the infestation with the mesocercariae Alaria alata in 1.9% of the dogs and in 1.

[The ultrastructure of sterile larvocysts of Echinococcus granulosus from different hosts].

The sterile larvocysts of Echinococcus granulosus are characterized by host-dependent morphological variability. The distinctions reside in the intensity of germinative layer development, glycogen and lipid content, ultrastructure of the tegument distal cytoplasm. The larvocysts obtained from one host species in different geographic zones of the country are morphologically similar.