Figure 1

Final illness attack rate of epidemics with school closure operational issues. Outcomes of two different types of school closure intervention strategies (individual school closure and simultaneous school closure) for 2, 4 and 8 weeks school closure duration with/without antiviral treatment plus household prophylaxis (T+H) for three different R₀ values of 1.5, 2.0 and 2.5 as a function of a number of daily diagnosed cases (activation trigger) are shown. The outcomes are reported in cumulative illness attack rate as a percentage of the simulated population size. The non-intervention or baseline epidemics are shown in green line. Three different colours have been used to report school closure periods; dark blue for 2 weeks, orange for 4 weeks and dark red for 8 weeks closure duration, using four different markers used to distinbuish the two types of school closure intervention and presence/absence of antiviral treatment plus household prophylaxis. We assumed that 50% of symptomatic cases would be diagnosed after 1 day of their symptom's appearance. We further assumed that antiviral treatment and prophylaxis (T+H) began after 10 cases were diagnosed in one day in the community.