In urban environments, people spend about 90% of their time indoors, where strong indicators of air-borne contaminants have been found. Currently, there are no reports on the fungal presence and distribution in the air of hotel bedrooms. In this study, we assessed the presence of airborne fungi in bedrooms from three hotels and correlated with room characteristics. We sampled 100 L (L) of air from hotels in Nuevo León, Mexico, then fungi colony forming units (CFU) were measured and identification was made based on morphological features. Variables considered were the presence of carpet, number of beds, cleaning status for the room and floor number. Penicillium, Cladosporium and Aspergillus exhibited the highest CFU concentration and frequency. A slight tendency was observed towards lower fungi concentrations when rooms had been cleaned before sampling. Statistical differences were found between rooms with carpet vs. no carpet, and one vs. two beds. Furthermore, a correlation between floor number and fungi concentration was observed with correspondence to the hotels’ room assignment protocol. These findings offer new variables to take into consideration when designing and implementing preventive or corrective sanitization procedures to improve their efficiency and could be relevant for hotel bedrooms as well as any other type of room.

中文翻译：

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地毯、人类活动和床位数量对酒店卧室空气中真菌浓度的影响

在城市环境中，人们将大约 90% 的时间花在室内，在那里发现了空气传播污染物的强烈指标。目前，尚无关于酒店卧室空气中真菌存在和分布的报告。在这项研究中，我们评估了三家酒店卧室中空气传播的真菌的存在，并与房间特征相关联。我们从墨西哥新莱昂的酒店抽取了 100 L (L) 的空气，然后测量了真菌菌落形成单位 (CFU)，并根据形态特征进行了识别。考虑的变量包括地毯的存在、床的数量、房间的清洁状态和楼层数。青霉属、枝孢属和曲霉属表现出最高的 CFU 浓度和频率。在采样前清洁房间时，观察到真菌浓度略有降低的趋势。在有地毯的房间与没有地毯的房间以及一张床和两张床之间发现了统计差异。此外，根据酒店的房间分配协议，观察到楼层数和真菌浓度之间的相关性。这些发现提供了在设计和实施预防性或纠正性消毒程序以提高效率时需要考虑的新变量，并且可能与酒店卧室以及任何其他类型的房间相关。