Combined effects of prevention and quarantine on a breakout in SIR model
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Recent breakouts of several epidemics, such as flu pandemics, are serious threats to human health. Themeasures of protection against these epidemics are urgent issues in epidemiological studies. Prevention andquarantine are two major approaches against disease spreads. We here investigate the combined effects ofthese two measures of protection using the SIR model. We use site percolation for prevention and bondpercolation for quarantine applying on a lattice model. We find a strong synergistic effect of prevention andquarantine under local interactions. A slight increase in protection measures is extremely effective in theinitial disease spreads. Combination of the two measures is more effective than a single protection measure.Our results suggest that the protection policy against epidemics should account for both prevention andquarantine measures simultaneously.
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