Craig Roberts, epidemiologist emeritus at the University of Wisconsin at Madison, said that “bubbles sound good in concept but are difficult to pull off, especially at this scale.”
“The key, he said, “is the degree to which the community stays in the bubble, of course, and nobody violates the rules” — sneaking into town, for example. But staff members could be potential problems if they’re coming and going from the community. That makes it more like a long-term care facility, he said, where only residents are on lockdown.