NBC Newsのインスタグラム(nbcnews) - 11月25日 00時35分
When it comes to vaccinating the world, regulatory approval is only the first step.
Rolling out Covid-19 shots to even a fraction of the world's 7.8 billion people will require conquering an epic supply-chain challenge at a scale that dwarfs any other in history.
"It's going to be an extraordinary logistic challenge," one former official told @NBC News. "I just hope it works."
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🖌 @ibrahirn / @nbcnewsart
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