On Thursday, the hospital said that nurses union's assertions "do not reflect actual facts learned from the medical record and interactions with clinical caregivers."
The hospital said that CDC guidelines were followed, and that additional guidance and clarity was sought.
Nurses' union says caregivers at great risk of Ebola infection
In a statement, the hospital said that nurses caring for Duncan wore protective gear consistent with CDC guidelines, including shoe covers, face shields, and an optional N-95 mask, and that when nurses complained isolation suits left the skin on their necks exposed, the hospital ordered hoods be worn.
The hospital admitted that some Tyvek suits were too large. "We have since received smaller sizes, but it is possible that nurses used tape to cinch the suits for a better fit," the statement said.
Ebola: Texas hospital denies breach of protocols - CBS News