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2021-03-19, 11:29
The US Has 3 Covid Vaccines—Testing New Ones Is Complicated
Now that authorized versions are available, it’s tough to recruit volunteers for trials that might give them a placebo. But there are other options.
https://www.wired.com/story/the-us-has-3...omplicated
Now that authorized versions are available, it’s tough to recruit volunteers for trials that might give them a placebo. But there are other options.
https://www.wired.com/story/the-us-has-3...omplicated