Kantele Franko

Associated Press

COLUMBUS, Ohio (AP) — A health official says at least eight people in northeast Ohio are now quarantined and being monitored because they had contact with a Texas nurse who was diagnosed with Ebola after visiting the area.

The health commissioner in Summit county says the group includes six people in his county. Two are in Cuyahoga County, which includes Cleveland.

The nurse, 29-year old Amber Vinson, visited family in the Akron area last weekend, then flew from Cleveland to Dallas Monday.

Vinson had treated the Liberian man who died of the disease in a Dallas hospital. Health officials previously said Vinson didn't show symptoms in Ohio but now say they can't rule out the possibility that her illness began Friday or Saturday. People infected with Ebola aren't considered contagious until they have symptoms.