Fig. 2

The “three-step” clean and disinfection of patient unit (1) The clean zone was marked in blue, including a medication preparation vehicle, a bed end table, an equipment cabinet, and a mobile nurse station. (2) The semi-contaminated zone was marked in yellow, including bed railings, bedside tables, and bed head panels. (3) The contaminated zone was marked in red, including the patient’s black trash can and yellow trash can. The procedure of cleaning and disinfection was first to the clean zone, then to the semi-contaminated zone, and finally to the contaminated zone