11 May 2020 - As coronavirus cases surged across the United States earlier this year, doctors faced a harrowing prospect. Sometime soon, they worried, physicians might have to decide which patients would receive ventilators amid a projected shortage.

It's a crisis Italy faced and one the United States largely avoided. 

But already, doctors in the US are facing another difficult decision: how to ration limited supplies of an experimental drug shown to be effective against the virus.

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