A spatial analysis of giardiasis and cryptosporidiosis in relation to public water supply distribution in North West England

N. F. Reeve*, P. J. Diggle, Kenneth Lamden, T. Keegan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Giardia and Cryptosporidium are both waterborne parasites and leading causes of gastroenteritis. Although specimens from diarrhoeic patients are routinely examined for Cryptosporidium, they are often not examined for Giardia so many cases go undiagnosed. Since 2002, all faecal specimens in Central Lancashire have been tested for infection with Giardia and Cryptosporidium. The aim of this paper is to gain insight into the factors contributing to giardiasis and cryptosporidiosis, including evidence of transmission via drinking water. Our analysis found a higher risk of both conditions for young children and a second peak in risk of giardiasis in adults. There was a significantly higher risk of giardiasis for males and a higher risk of cryptosporidiosis for females. The geographical location was significant, with an increased risk in the north. Residence in an area with increased supply from one water treatment works was a significant predictor for cryptosporidiosis.

Original languageEnglish
Pages (from-to)61-70
Number of pages10
JournalSpatial and Spatio-temporal Epidemiology
Volume27
DOIs
Publication statusPublished - Nov 2018

Bibliographical note

Funding Information:
N. Reeve was funded by a studentship from the Medical Research Council.

Publisher Copyright:
© 2018 Elsevier Ltd

Keywords

  • Cryptosporidiosis
  • Gastrointestinal disease
  • Giardiasis
  • Public health
  • Spatial analysis
  • Surveillance

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