  In a pandemic like Covid-19, there are many countries of lower-earning cannot
provide a complete locked-down within the duration of the detected case. The
locked-down may result in famine throughout the region of underdeveloped
countries after the outbreak. So, a conjectural setup of an epidemic has been
studied by applying specific period of locked-down (30 days) in 5 different
scenarios. The stochastic approach to the SEIR (Susceptible, Exposed, Infected
and Recovered) model has been used to evaluate the dynamics and the effects of
locked-down. It is observed that there exist a suitable period to apply
locked-down where more susceptible escape from the infection. The effect of the
early (as soon as the infected case detected) and late (with respect to the
estimated peak of detected cases for no locked-down) implementation of the
locked-down has also been studied and found that the late implementation of
locked-down will take the least time to end the epidemic. The CFR (Case
Fatality Rate) has also been found to be varied from 7.55 to 8.02 for all the
considered scenarios.
