The spaghetti lines trace the COVID-19 outbreak in South Carolina (black
dashed line) and the counties (straight lines) as a percentage of the
cases reported on April 14, 2020. Cases unallocated to a county due to
lack of information are included in the state line; counties with less
than 20 reported cases are not shown in the diagram.
Figure 2: Variation in outbreak
rates at U.S. county level