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Figure 3: Mathematical modeling of the lockdown and its impact on potential coronavirus disease2019 cases. Forecast of the coronavirus disease2019 epidemic in India with mitigatory social distancing. Each of the four panels shows the variation in the number of infectives with lockdowns of various durations. The 3week lockdown starting 25 March does not prevent resurgence after its suspension as shown in panel (a). Neither does a further lockdown of 28 days spaced by a 5 days suspension, shown in panel (b). The protocols in panels (c and d), comprising three lockdowns with 5 days relaxations and a single 49 days lockdown reduce case numbers below 10. This forecast is based on all cases being symptomatic so α¯ =1. The fit parameter is β =0.0155 and we set γ =1/7 
