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A community outbreak of cryptosporidiosis in Sydney associated with a public swimming facility: a case-control study

Journal Article


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Abstract


  • In February, 2008, the South Eastern Sydney Illawarra Public Health Unit investigated an outbreak of cryptosporidiosis within the south east region of Sydney, Australia. Thirty-one cases with laboratory-confirmed cryptosporidiosis and 97 age- and geographically matched controls selected by random digit dialling were recruited into a case-control study and interviewed for infection risk factors. Cryptosporidiosis was associated with swimming at Facility A (matched odds ratio = 19.4, 95% confidence interval: 3.7–100.8) and exposure to household contacts with diarrhoea (matched odds ratio = 7.7, 95% confidence interval: 1.9–31.4) in multivariable conditional logistic regression models. A protective effect for any animal contact was also found (matched odds ratio = 0.2, 95% confidence interval: 0.1–0.7). Cryptosporidium hominis subtype IbA10G2 was identified in 8 of 11 diagnostic stool samples available for cases. This investigation reaffirms the importance of public swimming pools as potential sources of Cryptosporidium infection and ensuring their compliance with water-quality guidelines. The protective effect of animal contact may be suggestive of past exposure leading to immunity.

UOW Authors


  •   Mayne, Darren
  •   Ressler, Kelly-Anne (external author)
  •   Smith, Diane (external author)
  •   Hockey, Gareth (external author)
  •   Botham, Susan J. (external author)
  •   Ferson, Mark J. (external author)

Publication Date


  • 2011

Citation


  • Mayne, D. J., Ressler, K., Smith, D., Hockey, G., Botham, S. J. & Ferson, M. J. (2011). A community outbreak of cryptosporidiosis in Sydney associated with a public swimming facility: a case-control study. Interdisciplinary Perspectives on Infectious Diseases, 2011 341065-1-341065-6.

Scopus Eid


  • 2-s2.0-84862907548

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1377&context=ihmri

Ro Metadata Url


  • http://ro.uow.edu.au/ihmri/360

Has Global Citation Frequency


Start Page


  • 341065-1

End Page


  • 341065-6

Volume


  • 2011

Place Of Publication


  • United States

Abstract


  • In February, 2008, the South Eastern Sydney Illawarra Public Health Unit investigated an outbreak of cryptosporidiosis within the south east region of Sydney, Australia. Thirty-one cases with laboratory-confirmed cryptosporidiosis and 97 age- and geographically matched controls selected by random digit dialling were recruited into a case-control study and interviewed for infection risk factors. Cryptosporidiosis was associated with swimming at Facility A (matched odds ratio = 19.4, 95% confidence interval: 3.7–100.8) and exposure to household contacts with diarrhoea (matched odds ratio = 7.7, 95% confidence interval: 1.9–31.4) in multivariable conditional logistic regression models. A protective effect for any animal contact was also found (matched odds ratio = 0.2, 95% confidence interval: 0.1–0.7). Cryptosporidium hominis subtype IbA10G2 was identified in 8 of 11 diagnostic stool samples available for cases. This investigation reaffirms the importance of public swimming pools as potential sources of Cryptosporidium infection and ensuring their compliance with water-quality guidelines. The protective effect of animal contact may be suggestive of past exposure leading to immunity.

UOW Authors


  •   Mayne, Darren
  •   Ressler, Kelly-Anne (external author)
  •   Smith, Diane (external author)
  •   Hockey, Gareth (external author)
  •   Botham, Susan J. (external author)
  •   Ferson, Mark J. (external author)

Publication Date


  • 2011

Citation


  • Mayne, D. J., Ressler, K., Smith, D., Hockey, G., Botham, S. J. & Ferson, M. J. (2011). A community outbreak of cryptosporidiosis in Sydney associated with a public swimming facility: a case-control study. Interdisciplinary Perspectives on Infectious Diseases, 2011 341065-1-341065-6.

Scopus Eid


  • 2-s2.0-84862907548

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1377&context=ihmri

Ro Metadata Url


  • http://ro.uow.edu.au/ihmri/360

Has Global Citation Frequency


Start Page


  • 341065-1

End Page


  • 341065-6

Volume


  • 2011

Place Of Publication


  • United States