Explaining a mass quarantine: What does it mean to ‘shelter in place’? And who has the power to call for it?
WASHINGTON — Six counties in the San Francisco metro area made headlines when they announced Monday they were ordering all their residents to “shelter in place” in response to the novel coronavirus.
The sweeping proclamation is the most striking example to date of state and local governments in the United States taking sweeping action to halt the spread of the novel coronavirus and to limit the impact of the disease it causes, Covid-19. While the Bay Area is the first region in the U.S. to issue such an order, a number of states have mandated school and business closures and vastly curtailed nearly all major events.

