Summary This study was aimed to determine the prevalence of Toxocara canis/cati, Strongyloides stercoralis, Giardia spp., and Cryptosporidium spp., which occur and are potentially zoonotic to humans in domestic dogs and cats in Moscow (Russia). The fecal flotation method and larvae detection by microscopy of a direct feces smear were performed to detect Toxocara, Giardia spp., and Cryptosporidium spp. The total parasitic prevalence in dogs was as follows: Giardia spp.: 10.2 % (226/2208), Cryptosporidium spp.: 2.7 % (60/2208), T. canis: 2 % (45/2208), S. stercoralis larvae: 1.1 % (25/2208). The younger animals under were infected more than those over 12 months of age (p<0.001). The preva lence rates were along these lines: Giardia spp. (18.2 %), Cryptosporidium spp. (5.7 %), T.canis (3 %), S. stercoralis larvae (2.3 %). The overall prevalence in cats was as follows: Giardia spp. - 5.2 % (71/1350), Cryptosporidium spp. - 4.8 % (65/1350), T. cati - 4.1 % (56/1350). Similarly to dogs, the infection rates were higher in cats under 12 months of age Giardia spp. (8.2 %), Cryptosporidium spp. (8.6 %), T. cati (7.5 %. Analysis of combined infections in dogs revealed the following combinations: Giardia spp. and Cryptosporidium spp. (35.5 %) larvae of S. stercoralis sp. and Giardia spp. (32.3 %), T.canis and Giardia spp. (22.6 %), T.canis and Cryptosporidium spp. (6.6 %), T.canis and S.stercoralis and (3.2 %), respectively. In cats, only two coinfections by Giardia spp. and Cryptosporidium spp. (58.3 %), and T.cati with Giardia spp. (41.7 %) were noticed. Further research is needed to study the spread of parasitic diseases in pet animals. The data will improve countermeasures to prevent these diseases’ spread among animals and humans.
Mice are widely used as laboratory animals. Diagnosis of endoparasites is a necessary condition: this is a culling indicator of animals for SPF (specific pathogen free) vivariums, and for conventional vivariums, it is the necessary information for planning and the possibility of using these animals in various tests. This article describes live-time diagnostics of endoparasites in laboratory mice in SPF vivariums and in open-type vivariums. For the study, individual samples of faeces and bedding were taken from laboratory mice. Direct fecal smears were examined and the flotation method was used. The work was carried out in 2021–2022 in the Laboratory of Biology and Biological Basis of Preventive Measures of the VNIIP – FSC VIEV. During this study, the following 180 samples were taken: 138 individual faecal samples, 34 samples combined with the bedding, and 18 bedding samples. The studied samples were found to contain Giardia muris and Tritrichomonas sp., nematodes Aspiculuris tetraptera and Syphacia obvelata, and cestode Rodentolepis nana. Mixed invasions were also recorded. The results showed the need for planning work with laboratory mice in vivariums.
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