Therefore, it is necessary to take measures to reduce pollution within the hospital such as mechanical ventilation, such as the air-conditioning systems that can control the temperature and humidity control, ventilation rate control (Balaras et al.,2007), filter system (CDC and HICPAC, 2003), or the system installation UVGI (Ultraviolet germicidal irradiation) (Riley and Nardell, 1989.) To prevent the spread of germs and the health care of patients in the hospital (American Institute of Architects, 2001).
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