  A mathematical model to calculate the transmissibility of SARS-Cov-2 in Wuhan
City was developed and published recently by Tian-Mu Chen et al., Infectious
Diseases of Poverty, 2020, https://doi.org/10.1186/s40249-020-00640-3. This
paper improves this model in order to study the effect of different scenarios
that include actions to contain the pandemic, such as isolation and quarantine
of infected and at-risk people. Comparisons made between the different
scenarios show that the progress of the infection is found to strongly depend
on measures taken in each case. The particular case of Brazil was studied,
showing the dynamics of the first days of the infection in comparison with the
different scenarios contained in the model and the reality of the Brazilian
health system was exposed, in front of each possible scenario. The relative
evolution of the number of new infection and reported cases was employed to
estimate a containment date of the pandemic. Finally, the basic reproduction
number R0 values were estimated for each scenario, ranging from 4.04 to 1.12.
