Evidently this type of social distancing has been mandated before... during the 1918 outbreak of the Spanish flu.

Read about it here, courtesy of History.com:
How U.S. Cities Tried to Halt the Spread of the 1918 Spanish Flu
by David Roos
published March 11, 2020
updated March 16, 2020
Originally Posted By: History.com article
How U.S. city officials responded to the Spanish flu played a critical role in how many residents lived—and died.

With all of the scientific, technological, and medical advances in the past 100 years, how much have we learned?