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Influence of meteorological condition during rainstorm periods on the ambient concentrations of fungi in Bangkok, Thailand
Human and Ecological Risk Assessment ( IF 4.3 ) Pub Date : 2021-08-17 , DOI: 10.1080/10807039.2021.1967109
Kraiwuth Kallawicha, Pokkate Wongsasuluk, Chuphan Chompuchan, Wanich Suksatan, H. Jasmine Chao, Wattasit Siriwong, Wilaipak Nilsalai

Abstract

Meteorological conditions change substantially during rainstorms, potentially affecting ambient concentrations of fungal spores. Exposure to ambient fungal spores during rainstorm periods may result in adverse health outcome such as thunderstorm asthma and allergic symptoms. This study investigated the ambient concentrations of culturable fungi during rainstorms period in Bangkok, Thailand. Using a single-stage impactor, air samples were collected between October and November 2017, when Thailand was struck by three major tropical cyclones: Typhoon Khanun, Typhoon Damrey, and Typhoon Kirogi. Fungal colonies were counted and identified according to their morphology. Meteorological data were obtained from the Thai Meteorological Department. Multiple regression analysis, performed to determine the associations between fungal concentrations and meteorological parameters, revealed a mean fungal concentration of 1,230 ± 1,136 CFU/m3 (n = 60). Fungal concentrations increased before the rainstorm arrival and decreased during the downpour rain. The fungal genera Cladosporium sp., Penicillium sp., and Aspergillus sp. were commonly observed but less than nonsporulating fungi, which accounted for more than 68% of all colonies. Fungal concentrations were positively associated with meteorological parameters, namely temperature, relative humidity, and maximum wind speed (R2 = 0.58, p < 0.05). Considerable changes in daily weather conditions during rainstorm periods strongly affected the fungal concentrations. Future studies should collect relevant hospital admission and more fungal monitoring data to determine the associations between fungal exposure during rainstorm periods and adverse outcomes.



中文翻译:

泰国曼谷暴雨期间气象条件对环境真菌浓度的影响

摘要

暴雨期间气象条件会发生显着变化,可能会影响真菌孢子的环境浓度。在暴雨期间接触周围的真菌孢子可能会导致不利的健康结果,例如雷暴哮喘和过敏症状。本研究调查了泰国曼谷暴雨期间可培养真菌的环境浓度。使用单级撞击器,在 2017 年 10 月至 11 月期间收集了空气样本,当时泰国遭受了三大热带气旋:台风卡农、台风达姆雷和台风基洛吉。根据其形态对真菌菌落进行计数和鉴定。气象数据来自泰国气象局。多元回归分析,3 ( n  = 60)。真菌浓度在暴雨到来之前增加,在倾盆大雨期间减少。真菌属Cladosporium sp.、Penicillium sp. 和Aspergillus sp.。通常观察到但少于非孢子真菌,占所有菌落的 68% 以上。真菌浓度与气象参数呈正相关,即温度、相对湿度和最大风速 ( R 2 = 0.58, p < 0.05)。暴雨期间日常天气条件的显着变化对真菌浓度产生了强烈影响。未来的研究应该收集相关的住院和更多的真菌监测数据,以确定暴雨期间真菌暴露与不良结果之间的关联。

更新日期:2021-09-12
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