Persistence of Salmonella Typhimurium in Well Waters from a Rural Area of Changchun City, China

Jiahang Li, Meiyue Ding, Ziming Han and Jincai Ma
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Jiahang Li: Key Laboratory of Ground Water Resource and Environment, Ministry of Education, Jilin University, Changchun 130021, China
Meiyue Ding: Key Laboratory of Ground Water Resource and Environment, Ministry of Education, Jilin University, Changchun 130021, China
Ziming Han: Key Laboratory of Ground Water Resource and Environment, Ministry of Education, Jilin University, Changchun 130021, China
Jincai Ma: Key Laboratory of Ground Water Resource and Environment, Ministry of Education, Jilin University, Changchun 130021, China

IJERPH, 2018, vol. 15, issue 6, 1-13

Abstract: Salmonella -contaminated well water could cause major infection outbreaks worldwide, thus, it is crucial to understand their persistence in those waters. In this study, we investigated the persistence of Salmonella enterica serovar Typhimurium in 15 well waters from a rural area of Changchun City, China. Results illustrated that the time to reach detection limit ( ttd ), first decimal reduction time ( δ ), and the shape parameter ( p ) ranged from 15 to 80 days, from 5.6 to 66.9 days, and from 0.6 to 6.6, respectively. Principal component analysis showed that ttd s of S. Typhimurium were positively correlated with total organic carbon, pH, NH 4 + –N, and total phosphate. Multiple stepwise regression analysis revealed that ttd s could be best predicted by NH 4 + –N and pH. Canonical correspondence analysis and variation partition analysis revealed that NH 4 + –N and pH, and the rest of the water parameters, could explain 27.60% and 28.15% of overall variation of the survival behavior, respectively. In addition, ttd s were found to be correlated ( p < 0.01) with δ and p . Our results showed that the longer survival (>2.5 months) S. Typhimurium could constitute an increased health risk to the local communities, and provided insights into the close linkage between well water quality and survival of S. Typhimurium .

Keywords: Salmonella Typhimurium; persistence; well water; NH 4 + –N; pH (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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