Hospital systems in Phoenix and Tucson are among 55 across the United States designated as Ebola treatment centers.

The two Arizona hospital systems designated by the federal Centers for Disease Control and Prevention are Maricopa Integrated Health Systems in Phoenix and the University of Arizona Health Network.

MIHS President CEO Steve Purves says the CDC designation for his institution reflects many months of preparation and training by hospital personnel to develop and implement comprehensive protocols for treating Ebola.

There are no confirmed or suspected cases of Ebola in Arizona. Public health officials said the designation is precautionary and that the likelihood of an Ebola patient arriving in Arizona is remote.