- Nurses claim "guidelines were constantly changing" at the hospital, a union says
- When protective gear left their necks exposed, they say they were told to use medical tape
- A hospital spokesman says safety is the top priority
- The union hasn't revealed how many nurses they spoke with or identified them
(CNN)The Texas hospital where two health care workers contracted Ebola while caring for a patient had guidelines that were "constantly changing" and didn't have protocols on how to deal with the deadly virus," a nurses' union claims.