(AP) -- The governors of New Jersey and New York say they're issuing a mandatory quarantine for travelers who have had contact with Ebola-infected patients in West Africa.

New Jersey Gov. Chris Christie and New York Gov. Andrew Cuomo said a health care worker who had contact with Ebola patients in Africa already has been quarantined even though she has no symptoms. They say the woman landed at Newark Liberty Airport in New Jersey on Friday.

Any person traveling from the three West African nations who had contact with infected, or possibly infected, people will be automatically quarantined for 21 days. This includes doctors.

It will be coordinated with local health departments.