ABSTRACT
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. In 33 (84.6%) districts of the Moscow Region, dogs were registered to have D. immitis and D. repens infestation, with the former being preponderant in 31 districts. An original map of dirofilariasis distribution was compiled with the areas being singled out at a distance of Moscow: 15-20 km (6 districts) (the first ring); as long as 70 km (11 districts) (the second ring), and over 70 km (16 districts) where infestation rates greatly varied in both the number of infected animals and human beings and the species of causative agents.
Subject(s)
Dirofilaria immitis , Dirofilariasis/epidemiology , Dirofilariasis/transmission , Dog Diseases/epidemiology , Dog Diseases/transmission , Animals , Dogs , Humans , Moscow/epidemiologyABSTRACT
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.I1% of the cats. A method was first developed for the life-time diagnosis of alariasis in definitive and reserve hosts.
Subject(s)
Cat Diseases/prevention & control , Disease Reservoirs/veterinary , Dog Diseases/prevention & control , Trematoda/isolation & purification , Trematode Infections/veterinary , Animals , Cat Diseases/blood , Cat Diseases/diagnosis , Cats , Dog Diseases/blood , Dog Diseases/diagnosis , Dogs , Housing, Animal , Parasite Egg Count/methods , Russia , Seasons , Trematoda/growth & development , Trematode Infections/blood , Trematode Infections/diagnosis , Trematode Infections/prevention & control , WaterABSTRACT
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. The sterile Echinococcus granulosus larvocysts obtained upon experimental infection of mice demonstrate typical morphological signs of the strain used for infection.
