"This assertion that the reduced density of people reduces the spread of the virus also supports the conclusion that high-density areas such as busy business areas should remain restricted from significant business activity without additional precautions to keep the virus from increased spread from the higher densities caused by greater business activity. If the City does reduce restrictions and experiences greater viral spread caused by increased business traffic it will be seen as a 'lagging indicator' of increased cases reported in the Greater Placerville area."
http://inedc.com/14/el-dorado-county-struggles-%E2%80%9Cflatten-curve%E2%80%9D
