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An outbreak of Salmonella Typhimurium 9 at a school camp linked to contamination of rainwater tanks

Version 2 2024-06-06, 00:44
Version 1 2022-10-24, 04:59
journal contribution
posted on 2024-06-06, 00:44 authored by LJ Franklin, JE Fielding, J Gregory, L Gullan, D Lightfoot, SY Poznanski, Hassan VallyHassan Vally
SUMMARYIn March 2007, an outbreak of gastroenteritis was identified at a school camp in rural Victoria, Australia, affecting about half of a group of 55 students. A comprehensive investigation was initiated to identify the source. Twenty-seven attendees were found to have abdominal pain, diarrhoea and nausea (attack rate 49%). Of 11 faecal specimens tested all were positive forSalmonellaTyphimurium definitive phage type 9 (DT9). Of four samples taken from the untreated private water supply, two were positive for DT9. Drinking water from containers filled from rainwater tanks [relative risk (RR) 3·2,P=0·039] and participation in two recreational activities – flying fox (RR 5·3,P=0·011), and beam-balance (RR 3·9,P=0·050) – were indicative of a link with illness. Environmental and epidemiological investigations suggested rainwater collection tanks contaminated with DT9 as being the cause of the outbreak. Increased use of rainwater tanks may heighten the risk of waterborne disease outbreaks unless appropriate preventative measures are undertaken.

History

Journal

Epidemiology and Infection

Volume

137

Pagination

434-440

Location

England

ISSN

0950-2688

eISSN

1469-4409

Language

English

Publication classification

C1.1 Refereed article in a scholarly journal

Issue

3

Publisher

CAMBRIDGE UNIV PRESS