The nurses didn't "get it with protection" except in the sense that they were wearing inadequate protection when they got it.

Their necks were exposed, and they were exposed to a dying man who was bleeding, projectile vomiting, etc., etc.

THINK ABOUT IT. The family under quarantine, with whom he lived with the disease for several days - including his fiancee - is virtually at the end of the incubation period and in spite of all that NO ONE IS SICK. And none of them were wearing *any* protection at all

They wore NO protection, and his dirty sheets, towels and linen were in the house with them for several more days.

That and the fact that you're not infectious until you're very sick.

Hence the OK for the undiagnosed nurse running one degree of fever to return to Dallas. As public relations, of course, it was a disaster.

These are things that should be emphasized.