Table 2 Intervention scenarios for controlling transmission within university settings.

Scenario	Transmission probability per contact household/other per day	Mean no. of random contacts (SD = 1)	Mean no. of within-course contacts (SD = 4)	Max living circle size	% transmission reduction due to self-isolation within/between groups	Asymptomatic testing
Baseline	0.05^a	4^b	20^b	24	50/100	None
COVID security	0.05^a/0.04 or 0.025	4^b	20^b	24	50/100	None
Reduced face-to-face teaching	0.05^a/0.05^a	4^b	15 or 5	24	50/100	None
Reduced living circle size	0.05^a/0.05^a	4^b	20^b	20 or 14	50/100	None
Improved self-isolation	0.05^a/0.05^a	4^b	20^b	24	100/100	None
Reactive mass testing	0.05^a/0.05^a	4^b	20^b	24	50/100	Every 2 or 7 days when rates are increasing
Multiple	0.05^a/0.04	4^b	5	14	50/100	Every 2 days when rates are increasing

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