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ANALYSIS: The Swiss Cheese Model of Pandemic Defense

Lately, in the ongoing conversation about how to defeat the coronavirus, experts have made reference to the “Swiss cheese model” of pandemic defense.

The metaphor is easy enough to grasp: Multiple layers of protection, imagined as cheese slices, block the spread of the new coronavirus, SARS-CoV-2, the virus that causes Covid-19. No one layer is perfect; each has holes, and when the holes align, the risk of infection increases. But several layers combined — social distancing, plus masks, plus hand-washing, plus testing and tracing, plus ventilation, plus government messaging — significantly reduce the overall risk. Vaccination will add one more protective layer.

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Yahoo obtains some COVIS information Biden says the White House won't provide

WASHINGTON — President-elect Joe Biden blasted the Trump administration Wednesday for refusing to share information needed to help his incoming team battle the coronavirus pandemic, including data on supplies in the national stockpile.

“We’ve been unable to get access to the kinds of things we need to know about the depths of the stockpiles,” he said during a roundtable with frontline health workers. “We know there’s not much at all.”

A copy of those stockpile numbers — dated Nov. 16 — was provided to Yahoo News, which is publishing them. The numbers appear to show progress in some areas, such as in the stockpile of N95 respirators and ventilators, but also makes clear that earlier Trump administration promises to bolster the stockpile have fallen short.

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