Journal of water and health最新文献

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Water, sanitation and hygiene challenges of forcibly displaced Myanmar nationals in Rohingya camps in Bangladesh. 孟加拉国罗兴亚难民营中被迫流离失所的缅甸国民面临的水、环境卫生和个人卫生挑战。
IF 2.3 4区 环境科学与生态学
Journal of water and health Pub Date : 2023-10-01 DOI: 10.2166/wh.2023.045
Khusnur Jahan Shapna, Kamrul Hasan, Kazi Humayun Kabir, Jianfeng Li, Md Lokman Hossain
{"title":"Water, sanitation and hygiene challenges of forcibly displaced Myanmar nationals in Rohingya camps in Bangladesh.","authors":"Khusnur Jahan Shapna,&nbsp;Kamrul Hasan,&nbsp;Kazi Humayun Kabir,&nbsp;Jianfeng Li,&nbsp;Md Lokman Hossain","doi":"10.2166/wh.2023.045","DOIUrl":"https://doi.org/10.2166/wh.2023.045","url":null,"abstract":"<p><p>Improved water, sanitation and hygiene (WASH) facilities in water-scarce areas is one of the most important barriers to improving the standards of people's life, which is even worse in a locality with forcibly displaced people (e.g., nearly 1 million Rohingya refugees in Bangladesh). In attempting to understand the extent of vulnerability and risks of WASH facilities, their impacts, and adaptive practices in the communities, an exploratory study has been carried out in five selected camps (13, 15, 16, 24 and 27) in Cox's Bazar, Bangladesh. Examination of water facilities shows that households in camps 13, 15 and 16 suffered from an adequate supply of water during summer as there is no direct access to surface water from adjacent water reservoirs, while camps 24 and 27 have such facilities. The frequency of water shortage for drinking purposes in camps 13, 15 and 16 was not so severe as in camps 24 and 27. Drinking water collectors had to spend 3-5 h in queues. All latrines were communal/shared latrines, which made users feel uncomfortable and vulnerable. This study implies that WASH facilities need to be reinforced, and community sensitization on WASH behavior needs to be strengthened to reduce WASH-related health hazards.</p>","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"21 10","pages":"1385-1403"},"PeriodicalIF":2.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/wh_2023_045/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71412724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrigendum: J Water Health 1 September 2022; 20 (9): 1393-1404. Legionella colonisation in hot water systems in care homes from two Danish municipalities, Niss Skov Nielsen, Søren Anker Uldum. 勘误表:《水健康杂志》2022年9月1日;20(9):1393-1404。军团菌在丹麦两个市政当局Niss Skov Nielsen和Søren Anker Uldum养老院的热水系统中定居。
IF 2.3 4区 环境科学与生态学
Journal of water and health Pub Date : 2023-10-01 DOI: 10.2166/wh.2023.104
{"title":"Corrigendum: J Water Health 1 September 2022; 20 (9): 1393-1404. Legionella colonisation in hot water systems in care homes from two Danish municipalities, Niss Skov Nielsen, Søren Anker Uldum.","authors":"","doi":"10.2166/wh.2023.104","DOIUrl":"https://doi.org/10.2166/wh.2023.104","url":null,"abstract":"","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"21 10","pages":"1625"},"PeriodicalIF":2.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/wh_2023_104/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71412706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Water quality monitoring in southern Brazil and the assessment of risk factors related to contamination by coliforms and Escherichia coli. 巴西南部的水质监测和与大肠杆菌和大肠杆菌污染有关的风险因素评估。
IF 2.3 4区 环境科学与生态学
Journal of water and health Pub Date : 2023-10-01 DOI: 10.2166/wh.2023.182
Nathalia Geovana Nascimento Santos, Luana Carvalho Silva, Gustavo Henrique Migliorini Guidone, Victor Hugo Montini, Bruno Henrique Dias Oliva, Arthur Bossi Nascimento, Diana Nara Ribeiro de Sousa, Emília Kiyomi Kuroda, Sergio Paulo Dejato Rocha
{"title":"Water quality monitoring in southern Brazil and the assessment of risk factors related to contamination by coliforms and Escherichia coli.","authors":"Nathalia Geovana Nascimento Santos,&nbsp;Luana Carvalho Silva,&nbsp;Gustavo Henrique Migliorini Guidone,&nbsp;Victor Hugo Montini,&nbsp;Bruno Henrique Dias Oliva,&nbsp;Arthur Bossi Nascimento,&nbsp;Diana Nara Ribeiro de Sousa,&nbsp;Emília Kiyomi Kuroda,&nbsp;Sergio Paulo Dejato Rocha","doi":"10.2166/wh.2023.182","DOIUrl":"https://doi.org/10.2166/wh.2023.182","url":null,"abstract":"<p><p>The potability of water, including underground sources, is constantly affected by human activities. To assess water quality and water security in rural and urban areas of southern Brazil, a quantitative, retrospective analysis of water samples collected monthly by the Brazilian health authorities (19,687 samples from 2013 to 2021) was performed. In rural areas, 5,979 water samples (77.54%) were found to be contaminated by coliform bacteria and 3,431 (44.50%) by Escherichia coli. In addition, 1,616 (20.95%) of the contaminated samples were significantly correlated with rainfall amount. In urban areas, 1,268 (10.95%) of the samples contained coliform bacteria and 293 (2.53%) of these samples contained E. coli, with the factor of rainfall associated with 1,081 samples (9.33%) with bacterial contamination. In terms of physicochemical parameters, turbidity exceeded the national standard (5 uT) in 448 (2.32%) samples and fluoride fell below the required level (0.8 mg/L) in 106 samples (0.54%). The presence of free residual chlorine (0.2-2.0 mg/L) was verified in 846 samples (14.38%) in rural areas and in 10,825 samples (56.13%) in urban areas. These results suggest a strong association between rainfall factors and physicochemical alterations, as well as the risk of greater microbial contamination of water for human consumption.</p>","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"21 10","pages":"1550-1561"},"PeriodicalIF":2.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/wh_2023_182/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71412723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Classification of bottled waters marketed and consumed in Algeria through statistical approaches. 通过统计方法对阿尔及利亚销售和消费的瓶装水进行分类。
IF 2.3 4区 环境科学与生态学
Journal of water and health Pub Date : 2023-10-01 DOI: 10.2166/wh.2023.142
Khadidja Ketrouci, Mohammed Meddi, Naouel Bouregba, Imene Zatout, Asmae Rezki
{"title":"Classification of bottled waters marketed and consumed in Algeria through statistical approaches.","authors":"Khadidja Ketrouci,&nbsp;Mohammed Meddi,&nbsp;Naouel Bouregba,&nbsp;Imene Zatout,&nbsp;Asmae Rezki","doi":"10.2166/wh.2023.142","DOIUrl":"https://doi.org/10.2166/wh.2023.142","url":null,"abstract":"<p><p>The main objective of this work consists of classifying 30 brands of water bottled and marketed in Algeria, based on their physicochemical compositions and their comparison with some foreign brands recognized in their countries or on a world scale. Relevant to this, descriptive statistics, as well as hierarchical ascendant classification (HAC) and principal component analysis (PCA), were used to analyse the data. The results of this study highlighted a similarity between some Algerian brands and other foreign brands of water in terms of mineral content. Moreover, the results obtained by using PCA and HAC allowed us to divide the sample of Algerian mineral waters into three distinct groups, each with similar physicochemical characteristics. The first group (Soummam, Manbaa Al Ghezlane, Mouzaia, Amane, Djmila, and Hayet) is characterized by very high levels of mineral salts compared to the other brands. The second group (Guedila, Tazliza, Arwa, Baniane, Saida, Ifri, Messerghine, Sfid, Mansourah, Batna, Mileza, S. Rached, Dhaya, Qniaa, and Lejdar) is distinguished from the first group by its average mineralization. Finally, the third group (Fezguia, Nestlé, Ovitale, L. Khedidja, A. Bouglez, Ayris, Righia, Togi, and Toudja) presents a very low mineralization.</p>","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"21 10","pages":"1489-1502"},"PeriodicalIF":2.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/wh_2023_142/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71412703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
When the implementation of water safety plans fail: rethinking the approach to water safety planning following a serious waterborne outbreak and implications for subsequent water sector reforms. 当水安全计划的实施失败时:在严重的水传播疫情爆发后,重新思考水安全规划的方法以及对随后的水部门改革的影响。
IF 2.3 4区 环境科学与生态学
Journal of water and health Pub Date : 2023-10-01 DOI: 10.2166/wh.2023.188
Jim Graham, Kathryn Russell, Brent Gilpin
{"title":"When the implementation of water safety plans fail: rethinking the approach to water safety planning following a serious waterborne outbreak and implications for subsequent water sector reforms.","authors":"Jim Graham,&nbsp;Kathryn Russell,&nbsp;Brent Gilpin","doi":"10.2166/wh.2023.188","DOIUrl":"https://doi.org/10.2166/wh.2023.188","url":null,"abstract":"<p><p>Water suppliers in New Zealand have been preparing the water safety plans (WSPs) since 2005; large drinking water-associated outbreaks of campylobacteriosis occurred in Darfield in 2012 and in Havelock North in 2016. This paper reviews the WSP that was in place for Havelock North, and analyses why it failed to prevent this outbreak. The risk assessment team completing the WSP underestimated the risks to human health of contamination events, while overestimating the security of the groundwater and bore heads. Historical Escherichia coli transgressions were dismissed as likely despite sampler or testing errors, rather than important warning signals. The outbreak was a consequence of multiple factors including an untreated supply, a local animal faecal source, limitations to the aquifer integrity and bore head protection, and a failure to proactively respond to a flooding event. The overarching issue was a focus on narrow compliance with the Health Act rather than the use of the WSP as a valuable tool to proactively understand and manage public health risks. New Zealand plans to focus on the ability of an organisation to manage risk, with the emphasis on promoting conversations with water suppliers about integrated risk management rather than focusing solely on the preparation of a WSP.</p>","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"21 10","pages":"1562-1571"},"PeriodicalIF":2.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/wh_2023_188/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71412725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Temporal and spatial variations of disinfection by-products in South Taihu's drinking water, Zhejiang Province, China. 浙江省南太湖饮用水中消毒副产物的时空变化。
IF 2.3 4区 环境科学与生态学
Journal of water and health Pub Date : 2023-10-01 DOI: 10.2166/wh.2023.149
Tao Liu, Min Zhang, Dong Wen, Yun Fu, Jianhua Yao, Guojian Shao, Zhang Peng
{"title":"Temporal and spatial variations of disinfection by-products in South Taihu's drinking water, Zhejiang Province, China.","authors":"Tao Liu,&nbsp;Min Zhang,&nbsp;Dong Wen,&nbsp;Yun Fu,&nbsp;Jianhua Yao,&nbsp;Guojian Shao,&nbsp;Zhang Peng","doi":"10.2166/wh.2023.149","DOIUrl":"https://doi.org/10.2166/wh.2023.149","url":null,"abstract":"<p><p>Some disinfection by-products (DBPs) in drinking water present a potential safety concern. This study focuses on the elements influencing DBPs formation. A total of 120 water samples were collected from 10 different drinking water facilities spanning 5 counties within Huzhou, Zhejiang Province, China. Concentrations of trihalomethanes (THMs) and haloacetic acids (HAAs) were observed to be 14.5 and 27.4 μg/L, respectively, constituting 34 and 64% of the total DBPs. Seasonal fluctuations demonstrated that HAAs, THMs, halonitromethanes (HNMs), and haloacetonitriles (HANs) followed a similar pattern with higher levels in summer or autumn compared to spring. Importantly, the concentrations of HAAs and THMs were markedly higher in Taihu-sourced water compared to other sources. Geographically, Nanxun exhibited the highest levels of total DBPs, HAAs, and THMs, while Deqing and Changxing demonstrated significantly lower levels. Correlation studies between water quality parameters and DBPs revealed that factors such as chloride content, temperature, and residual chlorine positively influenced DBPs formation, whereas turbidity negatively affected it. Principal component analysis suggested similar formation processes for HANs, haloketones (HKs), HNMs, and THMs. Factors such as temperature, chemical oxygen demand (COD), and residual chlorine were identified as significant contributors to the prevalence of HAAs.</p>","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"21 10","pages":"1503-1517"},"PeriodicalIF":2.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/wh_2023_149/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71412714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of disinfection by-products in swimming pool environments on the immunological mechanisms of respiratory diseases. 游泳池环境中消毒副产物对呼吸道疾病免疫机制的影响。
IF 2.3 4区 环境科学与生态学
Journal of water and health Pub Date : 2023-10-01 DOI: 10.2166/wh.2023.335
Bo-Ae Lee
{"title":"Effects of disinfection by-products in swimming pool environments on the immunological mechanisms of respiratory diseases.","authors":"Bo-Ae Lee","doi":"10.2166/wh.2023.335","DOIUrl":"https://doi.org/10.2166/wh.2023.335","url":null,"abstract":"<p><p>Swimming in pools is a popular and healthy recreational activity. However, potential adverse health effects from disinfection byproduct (DBP) exposure in pool water are concerning. This study evaluated how such DBP exposure affects the respiratory system. DBP exposure was simulated with an animal-specific pool environment model. Experimental animals were exposed to DBPs for a specified duration and frequency over 4 weeks. The wet and dry weights of murine lungs were measured, with no significant differences observed. There were no significant differences in interkeukin (IL)-2/4/10, and interferon-γ levels. However, IL-6 expression decreased in the experimental group. To investigate the effects of DBP exposure on immune cell response, various samples, such as bronchoalveolar lavage fluid, lymph nodes, spleen, and thymus, were collected for T-cell isolation and fluorescence-activated cell sorting. Asthma-related blood cell distribution was analyzed using a complete blood count test; no significant differences were found. Thus, DBP exposure through this model did not induce substantial lung tissue damage, major alterations in cytokine expression (besides IL-6), significant immune cell responses, or changes in asthma-associated blood cell distribution. However, considering earlier results, future studies should focus on specific types, intensity, and duration of exercise that could affect DBP exposure-related immune-inflammatory responses.</p>","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"21 10","pages":"1600-1610"},"PeriodicalIF":2.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/wh_2023_335/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71412707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Misjudging drinking water quality risk: Adopting a barrier approach for meaningful risk assessment to address latent risks. 误判饮用水质量风险:采用屏障方法进行有意义的风险评估,以解决潜在风险。
IF 2.3 4区 环境科学与生态学
Journal of water and health Pub Date : 2023-10-01 DOI: 10.2166/wh.2023.077
Richard Walker
{"title":"Misjudging drinking water quality risk: Adopting a barrier approach for meaningful risk assessment to address latent risks.","authors":"Richard Walker","doi":"10.2166/wh.2023.077","DOIUrl":"https://doi.org/10.2166/wh.2023.077","url":null,"abstract":"<p><p>The water quality risk assessment is the foundation for every drinking Water Safety Plan. The need to conform with a 'Corporate' risk assessment model commonly dominated by asset management frequency data can cause misjudgement of microbial risk. Well-performed risk assessments should identify potential risks. Risk assessments which place too much emphasis on historical evidence to demonstrate 'likelihood' of microbial contamination are unsuitable for drinking water quality because they fail to recognise 'latent' risks associated with absent or underperforming barriers to contamination. Most outbreaks occur when these 'latent' factors align to create a failure. Good risk assessments need to provide foresight. This is achieved if drinking water quality risk assessments are based on a 'barrier' approach. Where adequate and reliable multiple barriers to contamination are present the likelihood of a hazardous event should then be categorised as rare. Where barriers are absent, inadequate, or unreliable, then a higher likelihood is appropriate, depending on the nature and extent of the barrier shortfall. Practical examples show how the 'barrier' approach can be applied. The barrier risk assessment directly informs the operational monitoring programme, enabling regular confirmation that the challenge and barrier performance are consistent with the predictions of the risk assessment.</p>","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"21 10","pages":"1404-1420"},"PeriodicalIF":2.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/wh_2023_077/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71412713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
First report of free-living amoebae in sewage treatment plants in Porto Alegre, southern Brazil. 巴西南部阿雷格里港污水处理厂首次发现自由生活的变形虫。
IF 2.3 4区 环境科学与生态学
Journal of water and health Pub Date : 2023-10-01 DOI: 10.2166/wh.2023.261
Thaisla Cristiane Borella da Silva, Daniel Leal Dos Santos, Marilise Brittes Rott
{"title":"First report of free-living amoebae in sewage treatment plants in Porto Alegre, southern Brazil.","authors":"Thaisla Cristiane Borella da Silva,&nbsp;Daniel Leal Dos Santos,&nbsp;Marilise Brittes Rott","doi":"10.2166/wh.2023.261","DOIUrl":"https://doi.org/10.2166/wh.2023.261","url":null,"abstract":"<p><p>Free-living amoebae (FLA) are amphizoic protozoans with a cosmopolitan distribution. Some strains of species are associated with infections in humans. They feed on microorganisms by phagocytosis; however, some of these can become endocytobionts by resisting this process and taking shelter inside the amoeba. The whole world is experiencing increasing shortage of water, and sewage is being reused, so the study of this environment is important in public health context. The objective of this work was to identify FLA present in sewage treatment plants in Porto Alegre, Brazil. About 1 L samples were collected from eight stations (raw and treated sewage) in January, February, July, and August 2022. The samples were sown in monoxenic culture, and the isolated amoebae were subjected to morphological and molecular identification. Polymerase chain reaction results indicated the presence of the genus Acanthamoeba in 100% of the samples. Gene sequencing showed the presence of Acanthamoeba lenticulata and Acanthamoeba polyphaga - T5 and T4 genotypes - respectively, which are related to pathogenicity. The environment where the sewage is released can be used in recreational activities, exposing individuals to potential interactions with these amoebae and their potential endocytobionts, which may pose risks to public health.</p>","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"21 10","pages":"1611-1624"},"PeriodicalIF":2.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/wh_2023_261/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71412708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Genotypic detection of β-lactamase-producing Escherichia coli isolates obtained from Seven Crater Lakes of San Pablo, Laguna, Philippines. 菲律宾拉古纳圣巴勃罗七个火山口湖产β-内酰胺酶大肠杆菌分离株的基因型检测。
IF 2.3 4区 环境科学与生态学
Journal of water and health Pub Date : 2023-10-01 DOI: 10.2166/wh.2023.157
Diana Rose D Mamawal, Jonah David V Calayo, Kherson P Gandola, Mae Ashley G Nacario, Mark Raymond A Vejano, Laurice Beatrice Raphaelle O Dela Peña, Windell L Rivera
{"title":"Genotypic detection of β-lactamase-producing Escherichia coli isolates obtained from Seven Crater Lakes of San Pablo, Laguna, Philippines.","authors":"Diana Rose D Mamawal,&nbsp;Jonah David V Calayo,&nbsp;Kherson P Gandola,&nbsp;Mae Ashley G Nacario,&nbsp;Mark Raymond A Vejano,&nbsp;Laurice Beatrice Raphaelle O Dela Peña,&nbsp;Windell L Rivera","doi":"10.2166/wh.2023.157","DOIUrl":"https://doi.org/10.2166/wh.2023.157","url":null,"abstract":"<p><p>The extended-spectrum β-lactamase (ESBL)-producing Escherichia coli is becoming a global public health concern. More comprehensive surveillance of β-lactam resistance in E. coli would improve monitoring strategies and control resistance transmission in contaminated environments. This study investigated the prevalence of β-lactamase genes in E. coli isolated from the Seven Crater Lakes in San Pablo, Laguna, Philippines. Water samples from lakes were collected for the isolation of E. coli (n = 846) and molecular characterization by detecting the presence of the uidA gene. The isolates were then tested for the presence of β-lactamase genes using PCR. Among the screened genes, bla<sub>AmpC</sub> was the most dominant (91%). Other β-lactamase genes such as bla<sub>TEM</sub>, bla<sub>SHV</sub>, and bla<sub>CTXM</sub> were also detected with percentage occurrence of 34, 5, and 1%, respectively. Multiple genes within individual isolates were also observed, wherein bla<sub>TEM/AmpC</sub> was the most prevalent gene combination. Moreover, a significant negative correlation between bla<sub>AmpC</sub> with bla<sub>SHV</sub> and bla<sub>CTXM</sub> was depicted in this study. Overall, these findings demonstrate the presence of β-lactamase genes in E. coli in the Seven Crater Lakes of San Pablo and can be used in developing effective strategies to control antibiotic resistance in environmental waters.</p>","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"21 10","pages":"1518-1529"},"PeriodicalIF":2.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/wh_2023_157/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71412709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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