Table 3.

Summary of five UK-wide face mask adoption scenarios considered in the comparative study.

Scenario number	Mask type	Mask use per day	Reuse model	Mask treatment	Number of masks per person per year	Addition of filters	Number of filters per person per year	Filter treatment
1	Single-use surgical mask	1	N/A	Disposed at the end of the day	365	No	0	N/A
2	Reusable cotton mask	1	Two masks in rotation	Manual washing, 50 washes	7	No	0	N/A
3	Reusable cotton mask	1	Two masks in rotation	Manual washing, 50 washes	7	Yes	365	Disposed at the end of day
4	Reusable cotton mask	1	Four masks in rotation	Machine washing, 30 washes	12	No	0	N/A
5	Reusable cotton mask	1	Four masks in rotation	Machine washing, 30 washes	12	Yes	365	Disposed at the end of day