Molecular epidemiology and spatial distribution of a waterborne cryptosporidiosis outbreak in Australia

Liege S. Waldron, Belinda C. Ferrari, Cristel Cheung-Kwok-Sang, Paul J. Beggs, Nicola Stephens, Michelle L. Power

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Cryptosporidiosis is one of the most common waterborne diseases reported worldwide. Outbreaks of this gastrointestinal disease, which is caused by the Cryptosporidium parasite, are often attributed to public swimming pools and municipal water supplies. Between the months of January and April in 2009, New South Wales, Australia, experienced the largest waterborne cryptosporidiosis outbreak reported in Australia to date. Through the course of the contamination event, 1,141 individuals became infected with Cryptosporidium. Health authorities in New South Wales indicated that public swimming pool use was a contributing factor in the outbreak. To identify the Cryptosporidium species responsible for the outbreak, fecal samples from infected patients were collected from hospitals and pathology companies throughout New South Wales for genetic analyses. Genetic characterization of Cryptosporidium oocysts from the fecal samples identified the anthroponotic Cryptosporidium hominis IbA10G2 subtype as the causative parasite. Equal proportions of infections were found in males and females, and an increased susceptibility was observed in the 0- to 4-year age group. Spatiotemporal analysis indicated that the outbreak was primarily confined to the densely populated coastal cities of Sydney and Newcastle.

LanguageEnglish
Pages7766-7771
Number of pages6
JournalApplied and Environmental Microbiology
Volume77
Issue number21
DOIs
Publication statusPublished - Nov 2011

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Cryptosporidiosis
Cryptosporidium
cryptosporidiosis
molecular epidemiology
Molecular Epidemiology
epidemiology
Disease Outbreaks
parasite
spatiotemporal analysis
New South Wales
spatial distribution
waterborne disease
Swimming Pools
pathology
Cryptosporidium hominis
water supply
waterborne diseases
public water supply
Parasites
parasites

Cite this

Waldron, Liege S. ; Ferrari, Belinda C. ; Cheung-Kwok-Sang, Cristel ; Beggs, Paul J. ; Stephens, Nicola ; Power, Michelle L. / Molecular epidemiology and spatial distribution of a waterborne cryptosporidiosis outbreak in Australia. In: Applied and Environmental Microbiology. 2011 ; Vol. 77, No. 21. pp. 7766-7771.
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Molecular epidemiology and spatial distribution of a waterborne cryptosporidiosis outbreak in Australia. / Waldron, Liege S.; Ferrari, Belinda C.; Cheung-Kwok-Sang, Cristel; Beggs, Paul J.; Stephens, Nicola; Power, Michelle L.

In: Applied and Environmental Microbiology, Vol. 77, No. 21, 11.2011, p. 7766-7771.

Research output: Contribution to journalArticleResearchpeer-review

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