ปัจจัยด้านการจัดการสิ่งแวดล้อมที่มีผลต่อความเข้มข้นของเชื้อจุลินทรีย์ในอากาศภายในศูนย์พัฒนาเด็กเล็ก อำเภอเมือง จังหวัดเลย

Abstract

     The airborne microorganisms (airborne bacteria and airborne fungi) in the child care center may cause illnesses of children, especially respiratory tract infection (RTI), such as Aspergillosis and Pneumonia. This study was aimed to environmental management factors affecting concentrations of airborne microorganisms in a child care center in Mueang district, Loei Province. Simple random sampling was used for sample selection from five child care centers in Mueang district. The airborne microorganisms were collected using Bio-Stage Impactor, and physical and environmental information collected from the building inspection survey sample checklist. The data were analyzed by frequencies, percentage, mean, standard division, simple linear regression, multiple linear regression, mean difference, 95%CI, and P-value.

     The result found that the concentrations of airborne microorganisms mean of indoor (I) and outdoor (O) were 17.44 ± 16.0 cfu/m³ and 48.43 ± 24.74 cfu/m³, respectively. The I/O ratio of concentrations of airborne microorganisms was 0.37. Environmental management factors which affect concentrations of airborne microorganisms including; the temperature control indoor which is in the recommended range 24-26 ^๐C could reduce the airborne microorganisms to 11.08 cfu/m³ (95% CI: 6.63 to 15.53, P-value < 0.001). Likewise, the exhaust fan work that could normally reduce the airborne microorganisms to 24.79 cfu/m³ (95% CI: 13.84 to 35.75, P-value < 0.001). As vice versa, a room without dust on the floor, wall, desk, chair, and the others, lead to reduces of airborne microorganisms to 14.57 cfu/m³ (95% CI: 8.75 to 20.39, P-value < 0.001). Moreover, the child care center room which has a regular schedule for maintenance of any systems, also could reduce the airborne microorganisms to 28.38 cfu/m³ (95% CI: 17.89 to 38.87, P-value < 0.001) and the cleaning consistent air condition could to reduces of airborne microorganisms to 7.83 cfu/m³ (95% CI: 2.02 to 13.65, P-value = 0.008).