Governor Quinn has ordered a 21-day home quarantine for all travelers returning to Illinois who had contact with Ebola patients in West Africa.
The order comes a day after a doctor in New York, who treated Ebola patients in Guinea, tested positive for the virus.
Illinois has no confirmed cases of Ebola. However, Governor Quinn calls the mandatory quarantine a necessary measure to protect the people of Illinois.
The governors of New York and New Jersey have ordered similar quarantines.
That announcement comes just as a possible Ebola patient is being monitored in the New York metro area.
A female healthcare worker who recently treated Ebola patients in West Africa was placed in isolation after arriving at New Jersey's Newark international airport yesterday.
The woman initially showed no symptoms of the virus when placed in quarantine, but officials say she developed a fever late Friday night.