Figure 5
From: COVID-19 transmission in group living environments and households
Change in local epidemic status and transmissibility of COVID-19 following household contacts. The black solid line represents the weekly number of newly diagnosed cases of COVID-19 in Sendai City. The gray broken line represents the weekly RT-PCR test-positive rate in people with a household contact who were tested at the drive-through COVID-19 testing center. The change in COVID-19 transmissibility after household contact appeared to be delayed by several weeks from the changes in local epidemic status. The lower half of the table shows the chronological change in the daily total number of infectious patients staying at their homes in Miyagi Prefecture (i.e., the prefecture where Sendai City is located).
