Table 1 Events associated with the risk of patient cross-colonization or infection

Patient Colonization Event; corresponding to WHO moment 1^a

Any HSE outside patient zone

➔

Any surface inside patient zone (including fomites and intact patient skin, excluding critical sites)

Door handle, keyboard of mobile computer

➔

Patient bedside monitor, patient arm

Patient Infection Event; corresponding to WHO moment 2^a

Any HSE (except the same critical site as arrival HSE surface)

➔

Any critical site

Patient arm, bedside monitor

➔

Central venous catheter insertion site, wound, sterile needle to be used on the patient