Publications

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occurrence of waterborne pathogens and escherichia coli at offshore drinking water intakes in lake ontario.the occurrence of waterborne pathogens was investigated at three drinking water intakes located about 2 km offshore in lake ontario. water sampling was conducted over 3 years for campylobacter spp., cryptosporidium spp., giardia spp., cultivable enteric viruses, and water quality parameters. all pathogens were detected in the offshore source water for each water treatment plant (wtp1 to wtp3), although at relatively low frequencies and concentrations. giardia was the most common pathogen, occurr ...201323835181
molecular and phylogenetic approaches for assessing sources of cryptosporidium contamination in water.the high sequence diversity and heterogeneity observed within species or genotypes of cryptosporidium requires phylogenetic approaches for the identification of novel sequences obtained from the environment. a long-term study on cryptosporidium in the agriculturally-intensive south nation river watershed in ontario, canada was undertaken, in which 60 sequence types were detected. of these sequence types 33 were considered novel with no identical matches in genbank. detailed phylogenetic analysis ...201222841595
genotype and subtype analyses of cryptosporidium isolates from dairy calves and humans in ontario.to assess the importance of dairy cattle as a source of human cryptosporidium infections in ontario, canada, 44 cryptosporidium isolates from neonatal dairy calves and 11 from sporadic human cases of cryptosporidiosis in the province were genotyped by pcr-rflp analyses of the cryptosporidium oocyst wall protein (cowp) and 18s rrna genes. isolates were also subtyped by sequence analysis of the 60-kda glycoprotein (gp60) gene. all bovine isolates successfully subtyped belonged to cryptosporidium p ...200616565813
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