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Effectiveness of different isolation strategies during acute haemorrhagic conjunctivitis outbreaks. Panels (a)–(i) represent outbreaks 1–9, respectively. Isolations were implemented before the peak of each outbreak, for which three to four kinds of isolation strategies were employed. The colour-coded curves indicate the prevalence according to different strategies. Prevalence, i = I/N, where I is the number of infectious individuals and N is the total number of persons.
