India scrambled to squelch an exodus of desperate migrant workers from its cities, warning they could be sent to quarantine camps and assuring that food and other staples would be provided for those who have lost jobs. Even as Prime Minister Narendra Modi underscored the need to comply with the nationwide lockdown to slow the spread of the coronavirus, he acknowledged the burden the shutdown of non-essential businesses and mandatory social distancing is having on livelihoods, particularly for the poor. …