Results after disinfection
After disinfection with UV-C light, a total of 72 of the 84(85.7%) FEs showed 0 CFUs. After disinfection using the EWD a total of 66 of the 79(83.5%) FEs showed 0 CFUs(Figure 1). A chi-square test showed no statistically significant difference in the distribution of FEs depending on the CFUs count after disinfection between study groups(p=0.70). In total, 12 FEs in group 1(D60) and 13 FEs in group 2(EWD) were still contaminated after disinfection in a CFU count ranging from 1 to >50.
A total of 56 FEs in the EWD group were disinfected centrally. Subanalysis showed no statistically significant difference in CFUs between FEs centrally versus FEs non-centrally disinfected in both the sample taken before(p=0.53) and after(p=0.82) disinfection.
One FE in group 1 was more contaminated after disinfection(1 CFU) than before(0 CFUs). Two FEs in group 2 showed more contamination(4 and 1 CFUs) after disinfection than before (both 0 CFUs).