Development and application of a gp60-based typing assay for Cryptosporidium viatorum

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Abstract

The apicomplexan intestinal parasites of the genus Cryptosporidium take a major toll on human and animal health and are frequent causes of waterborne outbreaks. Several species and genotypes can infect humans, including Cryptosporidium viatorum, which, to date, has only been found in humans. Molecular characterization of Cryptosporidium spp., critical to epidemiological analyses, is commonly based on gp60 gene analysis, which appears to require bespoke species- or group-specific PCR primers due to extensive genetic diversity across the genus. In this study, we amplified, sequenced, and characterized the gp60 gene of C. viatorum for the first time. Moreover, we developed and validated a gp60 typing assay for this species and applied it to 27 isolates originating from Asia, Africa, and Central America. A single subtype family, XVa, was identified containing multiple alleles.

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Stensvold, C. R., Elwin, K., Winiecka-Krusnell, J., Chalmers, R. M., Xiao, L., & Lebbad, M. (2015). Development and application of a gp60-based typing assay for Cryptosporidium viatorum. Journal of Clinical Microbiology, 53(6), 1891–1897. https://doi.org/10.1128/JCM.00313-15

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