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- W2799807402 abstract "In this study, qPCR was used to quantify opportunistic premise plumbing pathogens (OPPPs) and free-living amoebae in 11 tap water samples collected over four seasons from a city in northern China. Results demonstrated that the average numbers of gene copies of Legionella spp. and Mycobacterium spp. were significantly higher than those of Aeromonas spp. (p < 0.05). Legionella spp. and Mycobacterium spp. were 100% (44/44) positively detected while P. aeruginosa and Aeromonas spp. were 79.54% (35/44) and 77.27% (34/44) positively detected. Legionella pneumophila was only detected in 4 samples (4/44), demonstrating its occasional occurrence. No Mycobacterium avium or Naegleria fowleri was detected in any of the samples. The average gene copy numbers of target OPPPs were the highest in summer, suggesting seasonal prevalence of OPPPs. Average gene copy numbers of OPPPs in the taps of low-use-frequency were higher than in taps of high-use-frequency, but the difference was not significant for some OPPPs (p > 0.05). Moderate negative correlations between the chlorine concentration and the gene copy numbers of OPPPs were observed by Spearman analysis (rs ranged from − 0.311 to − 0.710, p < 0.05). However, no significant correlations existed between OPPPs and AOC, BDOC, or turbidity. Moderate positive correlations were observed between the target microorganisms, especially for Acanthamoeba spp., through Spearman analysis (p < 0.05). Based on our studies, it is proposed that disinfectant concentration, season, taps with different-use frequency, OPPP species, and potential microbial correlations should be considered for control of OPPPs in tap water." @default.
- W2799807402 created "2018-05-17" @default.
- W2799807402 creator A5030586441 @default.
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- W2799807402 creator A5050478181 @default.
- W2799807402 creator A5078611727 @default.
- W2799807402 date "2019-03-01" @default.
- W2799807402 modified "2023-10-15" @default.
- W2799807402 title "One-year survey of opportunistic premise plumbing pathogens and free-living amoebae in the tap-water of one northern city of China" @default.
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- W2799807402 doi "https://doi.org/10.1016/j.jes.2018.04.020" @default.
- W2799807402 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30573084" @default.
- W2799807402 hasPublicationYear "2019" @default.
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