A review of the diversity of Cryptosporidium in Rattus norvegicus, R. rattus and Mus musculus: What we know and challenges for the future
2022
Hancke, Diego | Suárez, Olga Virginia
The aim of this paper is to review the diversity of Cryptosporidium species and genotypes infecting synantropic rodents. A total of 27 papers published between 1990 and 2020 assed the presence of Cryptosporidium in these rodents worldwide and described 17 different species and genotypes of Cryptosporidium. A great variation in the prevalence values were observed (0–63%). The most frequent species/genotypes were Rat genotype I and IV for R. norvegicus and Rat genotype II and III R. rattus, while C. tyzzeri was for M. musculus. Cryptosporidium parvum, the second most common species after C. hominis involved in human cryptosporidiosis cases, was the third most detected Cryptosporidium species in R, norvergicus (9.4% of the positive samples) and the 3 rodent species are common host for C. muris, also recognized as zoonotic. Besides, these synanthopic rodents can harbor Cryptosporidium species whose natural hosts are cattle, bovids, pigs, other rodent species, birds and a broad range of mammals. Considering the diversity described so far, it would have a great epidemiological impact to know how the variation of Cryptosporidium species composition along urban-rural gradients is like, including synanthropic rodents, wild and domestic animals and environmental samples, and to analyze the causal factors of such variation.
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