Journal article

Electrophoretic analysis of genetic variability within Cryptosporidium parvum from imported and autochthonous cases of human cryptosporidiosis in the United Kingdom

RB Gasser, YGA El-Osta, RM Chalmers

Applied and Environmental Microbiology | AMER SOC MICROBIOLOGY | Published : 2003


Cryptosporidium parvum oocyst DNA samples (n = 184) from humans with cryptosporidiosis contracted during foreign travel or during outbreaks in the United Kingdom were characterized genetically and categorized by single-strand conformation polymorphism (SSCP)-based analysis of the small-subunit gene (pSSU) (approximately 300 bp) and second internal transcribed spacer (pITS-2) (approximately 230 bp) of nuclear ribosomal DNA. The two recognized genotypes (types 1 and 2) of C. parvum could be readily differentiated by a distinct electrophoretic shift in the pSSU SSCP profile, associated with a nucleotide difference of approximately 1.3 to 1.7%. Of the 102 samples from cases contracted during for..

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University of Melbourne Researchers