(Reuters) Fear of Ebola is causing U.S. hospitals to take precautions that, paradoxically, might backfire, increasing the risk to those caring for a patient with the deadly disease, researchers warned this week.

The only confirmed Ebola cases on U.S. soil so far have been two American aid workers flown from Liberia for treatment at Emory University Hospital. They were discharged this week after recovering from the disease that has killed more than 1,400 people in Africa.

While calling the extra steps “understandable given the horrific mortality of this disease,” Dr. Michael Klompas of Harvard Medical School and lead author of the paper in Annals of Internal Medicine, said they are unnecessary and could backfire.

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