Mitigation of infectious disease at school: targeted class closure vs school closure

BMC Infectious Diseases

Table 1 Percentage of realizations leading to an attack rate higher than 10 % , for different mitigation strategies and for various closure-triggering thresholds and closure durations

Closure strategy	Targeted	Targeted	Whole
(threshold, duration)	class	grade	school
No closure	34.6	34.6	34.6
3, 24 h	30.5	29.7	26.0
3, 48 h	28.1	23.5	23.2
3, 72 h	23.4	18.4	14.8
3, 96 h	23.5	20.3	13.0
3, 120 h	20.1	17.3	7.5
3, 144 h	19.7	16.3	5.6
2, 24 h	28.6	27.0	22.9
2, 48 h	22.0	21.6	17.8
2, 72 h	17.4	16.2	14.4
2, 96 h	13.6	11.2	11.0
2, 120 h	10.2	7.2	3.2
2, 144 h	11.6	6.8	1.6

The baseline case given by the simple isolation of symptomatic children is indicated as “No closure”. Parameter values: β = 3.5 · 10^-4 s ^-1, β _com = 2.8 · 10^-9 s ^-1, 1/ μ = 2 days, 1/ γ = 4 days, p _A = 1/3.

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