Tony Gutierrez, Associated Press
Texas Health Presbyterian Hospital Dallas staff line the drive that exits the emergency room as they wait for an ambulance carrying Nina Pham to depart, Thursday, Oct. 16, 2014, in Dallas. Pham, a nurse at the hospital was diagnosed with the Ebola virus after caring for Thomas Eric Duncan who died of the same virus. Amber Vinson, another nurse diagnosed, was taken to a similar location in Atlanta.

CLEVELAND — The family of a Dallas nurse who tested positive for Ebola after flying to Ohio and returning home says she wouldn't knowingly expose herself or anyone else.

It says in a statement issued Sunday through a spokesman suggestions nurse Amber Vinson ignored protocols recommended to her are false. It says she reported her body temperature three times before boarding her Oct. 13 flight home.

The U.S. Centers for Disease Control and Prevention has acknowledged Vinson checked in repeatedly and was cleared for travel.

Three people have been quarantined in northeast Ohio following Vinson's visit to Cleveland to prepare for her wedding. None has exhibited Ebola-like symptoms.

Vinson cared for a man who died from Ebola in Dallas.

Ebola is spread through bodily fluids. Someone who's infected doesn't become contagious until she shows symptoms. Health officials say Vinson exhibited symptoms in Ohio.