Phase 1a: healthcare personnel.

Phase 1b: essential workers listed in order of priority: police, fire, and hazmat; corrections and homeless shelter workers; childcare/k-12 teachers/staff; food and agriculture; manufacturing; grocery store workers; public transit workers; public and private mail carriers; persons age 75 and older; persons living in shelters, correctional facilities, migrant labor camps.

Phase 1c: essential workers listed in order of priority: energy; water and wastewater; housing/construction; food service; transportation and logistics; institutions of higher education faculty/staff; finance; information technology & communication; media; legal services; public safety (engineers); other public health workers; officials needed to maintain continuity of government; persons age 65 and older; those ages 16-64 with high-risk underlying medical conditions.