Vukić Lušić Darija, Piškur Vanda, Cenov Arijana, Tomić Linšak Dijana, Broznić Dalibor, Glad Marin, Linšak Željko
Department of Environmental Health, Faculty of Medicine, University of Rijeka, Brace Branchetta 20, 51000 Rijeka, Croatia.
Department of Environmental Health, Teaching Institute of Public Health of Primorje-Gorski Kotar County, Krešimirova 52a, 51000 Rijeka, Croatia.
Microorganisms. 2022 Dec 8;10(12):2429. doi: 10.3390/microorganisms10122429.
The bacterium is a ubiquitous microorganism naturally present in water environments. The actual presence of this opportunistic premise plumbing pathogen in recreational swimming pools and hot tubs in the northwestern part of Croatia has not been investigated. This study aimed to analyze the presence of the opportunistic pathogen in public swimming pool water in Primorje-Gorski Kotar County (N = 4587) over a four-year period (2018-2021). Additionally, the second aim was to investigate the connection between the presence of and pool water physicochemical parameters using mathematical predictive models. The presence of was detected in six pool samples. Five positive samples were found in the water of indoor hot tubs filled with fresh water, and one positive sample in an outdoor recreational saltwater pool. A predictive mathematical model showed the simultaneous influence of chemical parameters dominated by the temperature in saltwater and freshwater pools, as well as the significant influence of free residual chlorine and trihalomethanes. Our results pointed out that keeping all physicochemical parameters in perfect harmony is necessary to reach the best disinfection procedure and to avoid the optimum conditions for occurrence.
这种细菌是一种普遍存在的微生物，天然存在于水环境中。在克罗地亚西北部的休闲游泳池和热水浴缸中，这种机会性管道病原体的实际存在情况尚未得到调查。本研究旨在分析四年期间（2018 - 2021年）里，在滨海和山区县的公共游泳池水中（N = 4587）机会性病原体的存在情况。此外，第二个目标是使用数学预测模型研究该病原体的存在与池水理化参数之间的联系。在六个泳池样本中检测到了该病原体的存在。在装满淡水的室内热水浴缸水中发现了五个阳性样本，在一个室外休闲海水池中发现了一个阳性样本。一个预测数学模型表明，化学参数在咸水和淡水泳池中受温度主导的同时影响，以及游离余氯和三卤甲烷的显著影响。我们的结果指出，保持所有理化参数完美协调对于实现最佳消毒程序和避免该病原体出现的最佳条件是必要的。
