Journal of Environmental and Public Health / 2020 / Article / Tab 4

Research Article

Environmental Factors and Ventilation Affect Concentrations of Microorganisms in Hospital Wards of Southern Thailand

Table 4

Summary of the average bacterial and fungal concentrations and other key environmental characteristics by hospital ward.

MethodABCDRecommended level

BiosamplerBacteria (CFU/m3)533.81550.15577.00880.19<1,000 FU/m3
Fungi (CFU/m3)351.19261.36264.67318.70<500 FU/m3
Temperature (°C)27.1727.0927.1826.8322–26.1°C
Air velocity (m/s)0.7190.8320.9420.817<0.25 m/s
Humidity (%)72.0072.3372.0072.0030–60% RH

Open plateBacteria (CFU/m3)271.56454.58325.69442.55<1,000 FU/m3
Fungi (CFU/m3)40.6946.6757.4058.65<500 FU/m3
Temperature (°C)27.2727.3627.1927.0522–26.1°C
Air velocity (m/s)0.5560.6980.6680.741<0.25 m/s
Humidity (%)72.2572.0572.3372.0030–60% RH

Remark: NIOSH, 2004; WHO, 2000, ASHRAE 55, 2004; not in compliance with standard.

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