A large scale waterborne Campylobacteriosis outbreak, Havelock North, New Zealand
| Autor: | David A. Wilkinson, Beth Robson, Rachel Eyre, Tiffany A Walker, Anne C. Midwinter, Maurice Wilson, Nigel P. French, Lucia Rivas, Ji Zhang, Brent Gilpin, Angela Brounts, Angela J. Cornelius, Tammy Hambling, Nick D. Jones, David T. S. Hayman, Chris Hewison, Graham Mackereth, Anita Jagroop, Shevaun Paine, Patrick J. Biggs, Susan Lin, Paula Scholes, Tim Wood, Michael G Baker, Jill Sherwood |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Microbiology (medical) medicine.medical_specialty Veterinary medicine 030106 microbiology Campylobacteriosis Water supply medicine.disease_cause Campylobacter jejuni Disease Outbreaks 03 medical and health sciences 0302 clinical medicine Epidemiology Campylobacter Infections medicine Animals 030212 general & internal medicine Drainage Feces Sheep biology business.industry Campylobacter Outbreak biology.organism_classification medicine.disease Gastroenteritis Infectious Diseases Geography Cross-Sectional Studies business Water Microbiology New Zealand |
| Zdroj: | The Journal of infection. 81(3) |
| ISSN: | 1532-2742 |
| Popis: | Background We describe the investigation of a Campylobacter outbreak linked to contamination of an untreated, groundwater derived drinking water supply. Methods We analysed epidemiological data collected from clinician-confirmed diarrheal cases and estimated the total burden of Havelock North cases using an age-adjusted cross-sectional telephone survey. Campylobacter isolates from case fecal specimens, groundwater samples, and sheep fecal specimens from paddocks adjacent to the drinking water source were whole genome sequenced. Findings We estimate between 6260 and 8320 cases of illness including up to 2230 who lived outside the reticulation area, were linked to the contaminated water supply. Of these, 953 cases were physician reported, 42 were hospitalized, three developed Guillain-Barre syndrome, and Campylobacter infection contributed to at least four deaths. Of the 12 genotypes observed in cases, four were also observed in water, three were also observed in sheep and one was also observed in both water and sheep. Interpretation The contamination of the untreated reticulated water supply occurred following a very heavy rainfall event which caused drainage of sheep feces into a shallow aquifer. The existence of a routine clinical surveillance system for campylobacteriosis facilitated identification of the outbreak, recovery of clinical isolates, and early testing of the water for pathogens. Genotyping of the Campylobacter jejuni helped define the source of the outbreak and confirm outbreak periods and cases. Expected increases in heavy rainfall events and intensification of agriculture mean that additional safeguards are needed to protect populations from such drinking water outbreaks. Funding NZ Ministry of Health, Health Research Council, ESR SSIF, Royal Society. |
| Databáze: | OpenAIRE |
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