I think the travel ban is meant to be punitive as much as it is a quarantine. I think the way the OP was suggesting it was travel restrictions to or from a coun

I think the travel ban is meant to be punitive as much as it is a quarantine. I think the way the OP was suggesting it was travel restrictions to or from a country refusing to cooperate with treaties. Implemented in 30 days, not anyone who has traveled to China within 30 days.