WASHINGTON (AP) — A federal health official says revised guidance for health care workers treating Ebola patients will include protective gear "with no skin showing."

Dr. Anthony Fauci heads the National Institute of Allergy and Infectious Diseases. He tells ABC's "This Week" that those caring for an Ebola patient in Dallas were left vulnerable because some of their skin was showing.

The Centers for Disease Control and Prevention is working on revisions to safety protocols.

Ebola's incubation period is 21 days, and Fauci notes that mark is being reached Sunday for Dallas hospital workers who first treated the ill Liberian man.

Fauci tells NBC's "Meet the Press" that "the ones now today that are going to be 'off the hook' are the ones that saw him initially in the emergency room."

Meanwhile, Defense Secretary Chuck Hagel has ordered the military to prepare and train a 30-member medical support team that could provide short-term help to civilian health professionals if there are more Ebola cases in the United States. The team will include 20 critical care nurses, five doctors trained in infectious diseases and five trainers in infectious disease protocols.

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