This map based on the study’s model shows the timing in days for areas of Seattle to reach their peak number of cases — “The color is the timing of infection spread, with red occurring first, and blue occurring last (scale depicted in the lower right). Black means no infection (this can be seen more clearly on the zoomed-in figure around Capitol Hill). In the zoomed-in map of Capitol Hill in the lower right, dots represent residents and colors again represent infection timing; social connections are shown as gray/black edges. Neighborhood boundaries are provided by Zillow.” (Image: Zack Almquist/U. of Washington)