After a coronavirus test came back positive on a patient who had been treated at NorthBay VacaValley Hospital in Vacaville, Calif., in February, about 100 NorthBay workers were sent into self-quarantine for 14 days.

After a coronavirus test came back positive on a patient who had been treated at NorthBay VacaValley Hospital in Vacaville, Calif., in February, about 100 NorthBay workers were sent into self-quarantine for 14 days.