Meanwhile health officials have confirmed that a patient who underwent neurosurgery at a New Hampshire hospital had a rare and fatal "mad cow"-like disease, called Creutzfeldt-Jakob Disease.
At least 13 other patients may have been exposed to potentially-contaminated surgical equipment.
Eight of those patients were treated at the Catholic Medical Center in Manchester, where the infected patient underwent surgery.
Five others at the Cape Cod Hospital in Massachusetts may have also have been exposed to the equipment.
According the National Institutes of Health, symptoms of the fatal degenerative brain disease could take decades to show up.