rat genotype III are the species frequently detected in rats (Koehler et al. hominis are the major species involved in human and waterborne outbreaks (Xiao 2010 Ryan and Xiao 2014). At least 21 Cryptosporidium species and 21 genotypes have been cited in rodents: Cryptosporidium muris, Cryptosporidium parvum, Cryptosporidium hominis, Cryptosporidium meleagridis, Cryptosporidium tyzzeri, Cryptosporidium ubiquitum, Cryptosporidium suis, Cryptosporidium scrofarum, Cryptosporidium erinacei, Cryptosporidium canis, Cryptosporidium wrairi, Cryptosporidium rubeyi, Cryptosporidium andersoni, Cryptosporidium proliferans, Cryptosporidium occultus, Cryptosporidium viatorum, Cryptosporidium ditrichi, Cryptosporidium apodemi, Cryptosporidium alticolis, Cryptosporidium microti, Cryptosporidium ratti, rat genotypes II–IV, mouse genotypes II and III, naruko genotype, ferret genotype, chipmunk genotypes I and II, skunk genotype, hamster genotype, deer mouse genotypes I–IV, vole genotype, bear genotype, muskrat genotypes I and II, and ground squirrel genotypes I–III (see Lv et al. Currently, more than 40 Cryptosporidium species and similar number of genotypes have been recognized as valid worldwide (Zahedi and Ryan 2020 Ježková et al. infection in rodents ranging between 8.0 and 31.4% in mice and 2.1 and 63.0% in rats (Feng 2010 Koehler et al. In fact, previous studies reported prevalence rates of Cryptosporidium spp. infection in rodents, obtaining a 22% of prevalence in Europe (see Taghipour et al. A recent systematic review and meta-analysis estimated a 17% of pooled global prevalence of Cryptosporidium spp. infection in rodents is highly variable worldwide (Feng 2010). This protozoan can be transmitted by fecal–oral contamination, via ingestion of contaminated water or food, direct contact with infected persons or animals, indirect contact with contaminated fomites, and, in some cases, via inhalation (Sponseller et al. are the causal agent of cryptosporidiosis, a leading cause of diarrheal disease in both humans and animals worldwide (Innes et al. This ability facilitates rodents to spread and transfer their pathogens, such as Cryptosporidium spp., to humans and wild and domestic animals in rural and urban areas (Meerburg et al. 2002), being significantly more abundant in anthropogenically modified habitats (e.g., agricultural lands, pasturelands, urban areas) than non-modified habitats (Mendoza et al. The morphological and biological adaptations of rodents allow them to survive in any type of environments (Huchon et al. 2002), the most abundant and diversified order of mammals considered to be reservoirs of Cryptosporidium spp. 2016), being the order Rodentia, which represents at least 43% of the mammalian species (Wilson and Reeder 1993 Huchon et al. It can be found in more than 150 mammalian species (Bauerfeind et al. (phylum Apicomplexa) infects a broad range of vertebrate hosts that can play an important role in the maintenance and transmission of this pathogen (Kváč et al. in wild rodents from Corsica and their possible public health repercussions. Further studies are required to better understand the epidemiology of Cryptosporidium spp. viatorum was identified, our results highlight that wild murine rodents from Corsica could mediate in the maintenance and transmission of this protozoan to the environment and other hosts including humans and animals. in murids was obtained and only in one animal the zoonotic species C. Although a low occurrence of Cryptosporidium spp. in wild murine species from a Mediterranean island and constitute the first report of the zoonotic species C. The results herein reported provide the first data on Cryptosporidium spp. rat genotype III were successfully identified in R. Cryptosporidium viatorum, Cryptosporidium sp. As general occurrence, 15.4% of the rodents analyzed were positive for Cryptosporidium spp., being detected widely distributed along the island in R. by nested PCR to amplify an 830 bp fragment of the 18S rRNA gene. Fecal samples were screened for Cryptosporidium spp. To estimate the distribution and occurrence, a total of 117 wild murine rodents of the species Rattus rattus (84), Mus musculus domesticus (21), Apodemus sylvaticus (11), and Rattus norvegicus (1) were captured in 24 different biotopes. In the island of Corsica (France), there are no previous data about these protozoa infecting wild rodents. are worldwide protozoan parasites that can affect to a broad range of vertebrate hosts, including rodents.
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