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Exposure to and colonisation by antibiotic-resistant E. coli in UK coastal water users: Environmental surveillance, exposure assessment, and epidemiological study (Beach Bum Survey). | LitMetric

AI Article Synopsis

  • Antibiotic-resistant bacteria (ARB) are a growing public health concern, with this study examining how exposure in natural environments, particularly bathing waters, contributes to human colonization by ARB.* -
  • The study analyzed 97 bathing water samples and found that 11 had E. coli carrying the bla gene, indicating ARB presence, and estimated significant water sports activity leading to potential ingestion.* -
  • Results showed surfers have a higher likelihood of being colonized by bla-bearing E. coli (6.3%) compared to non-surfers (1.5%), highlighting the need for more research on ARB transmission in natural environments.*

Article Abstract

Background: Antibiotic-resistant bacteria (ARB) present a global public health problem. With numbers of community-acquired resistant infections increasing, understanding the mechanisms by which people are exposed to and colonised by ARB can help inform effective strategies to prevent their spread. The role natural environments play in this is poorly understood. This is the first study to combine surveillance of ARB in bathing waters, human exposure estimates and association between exposure and colonisation by ARB in water users.

Methods: 97 bathing water samples from England and Wales were analysed for the proportion of E. coli harbouring bla. These data were used to estimate the likelihood of water users ingesting bla-bearing E. coli. Having identified surfers as being at risk of exposure to ARB, a cross-sectional study was conducted. Regular surfers and non-surfers were recruited to assess whether there is an association between surfing and gut colonisation by blabearing E. coli.

Results: 11 of 97 bathing waters sampled were found to contain bla-bearing E. coli. While the percentage of bla-bearing E. coli in bathing waters was low (0.07%), water users are at risk of ingesting these ARB. It is estimated that over 2.5 million water sports sessions occurred in 2015 resulting in the ingestion of at least one bla-bearing E. coli. In the epidemiological survey, 9/143 (6.3%) surfers were colonised by bla-bearing E. coli, as compared to 2/130 (1.5%) of non-surfers (risk ratio=4.09, 95% CI 1.02 to 16.4, p=0.046).

Conclusions: Surfers are at risk of exposure to and colonisation by clinically important antibiotic-resistant E. coli in coastal waters. Further research must be done on the role natural environments play in the transmission of ARB.

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Source
http://dx.doi.org/10.1016/j.envint.2017.11.003DOI Listing

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