Figure 2

Time series and moving averages of bus validations, COVID-19 cases, and COVID-19 deaths. Time evolutions of the normalized moving averages of (a) bus validations, (b) COVID-19 cases, and (c )deaths, for healthcare workers (in red) and all individuals (in black). The insets show their corresponding daily numbers. In (a), we note that healthcare workers that came into contact with SARS-CoV-2 during the studied period did not reduce their bus rides as much as other passengers. In addition, the normalized moving averages of bus validations of healthcare workers and of all individuals are getting closer to each other again as the economic reopening progresses. In (b) and (c), we find that both the normalized moving averages of cases and of deaths, respectively, for healthcare workers increased before those of all individuals until the lockdown regime. The windows of moving averages have 5 days of width for all curves. We normalized each moving average by its maximum. The vertical dotted lines represent the beginning of social isolation (State Decree 33,519), lockdown (State Decree 33,574), and economic reopening (State Decree 33,608) regimes imposed on March 20, May 8, and June 1, 2020, respectively. We also highlight, in light red, the lockdown period in the city of Fortaleza.