The nurses calling in with some pretty serious problems preventing them from coming to work at that hospital should be amazingly high. Some might even consider limb fractures to avoid the plague, and court issued gag orders about speaking to anyone.
Nebraska is one of the 4 special treatment centers in the United States for infectious disease, remember Emory in Atlanta, well this is one of them.
The four are Emory, Maryland, Nebraska and Montana, all especially built to be near, and treat researchers who work with the deadliest of diseases.