Table 1.

Level of exposure for HCW-to-HCW interactions according to the use of masks, distance and intensity

Use of masks	>1-m distance		≤1-m distance
	Low intensity	High intensity	Low intensity	High intensity
CP+ P+	No risk	Low	Low	Low
CP+ P−	Low	Low	Low	Medium
CP− P+	Low	Medium	Medium	High
CP− P−	Medium	Medium	High	High

CP: COVID-19-positive HCW; P: exposed HCW. (+): using the mask; (−): not using the mask.