International Journal of Environmental Research and Public Health Article An Investigation of Airborne Bioaerosols and Endotoxins Present in Indoor Traditional Wet Markets before and after Operation in Taiwan: A Case Study Da-Jiun Wei 1, Wen-Te Liu 2, Huin-Tsung Chin 3, Ching-Hsing Lin 4, I-Chun Chen 5,* and Yi-Tang Chang 1,* 1 Department of Microbiology, Soochow University, Taipei 11102, Taiwan;
[email protected] 2 Department of Tourism, Tungnan University, New Taipei City 22202, Taiwan;
[email protected] 3 The Graduate School of Technology for Hazards Mitigation, Tungnan University, New Taipei City 22202, Taiwan; fi
[email protected] 4 Center of General Education, National Taitung College, Taitung 95045, Taiwan;
[email protected] 5 Department of Land Resources, Chinese Culture University, Taipei 11114, Taiwan * Correspondence:
[email protected] (I-C.C.);
[email protected] (Y.-T.C.); Tel.: +886-2-2861051 (ext. 31431) (I.-C.C.); +886-2-28819471 (ext. 6862) (Y.-T.C.) Abstract: Customers in Taiwan prefer to purchase fresh foods and household supplies at indoor traditional wet markets (TWMs). The health risk to indoor TWM staff exposed to bioaerosols needs to be evaluated, since these workers spend long periods of time in the market for stall preparation, selling, and stall cleaning. This study investigated the bioaerosols present in two indoor TWMs. The results showed that the cleaning process at Market A after operations, involving the use of an agitated waterspout, was able to decrease the concentration of bacterial bioaerosols (BBs) by an average of 64%, while at the same time increasing the concentration of fungal bioaerosols (FBs) by about 2.4 fold.