I wrote a blog post over the weekend that has generated tremendous pushback, including an op-ed in the New York Times as well as thousands of comments on Twitter.

In my previous post, I suggested that while we’re pursuing Phase 3 testing of several promising Covid-19 vaccines, we could simultaneously offer those same, unapproved vaccines to a wider community of volunteers, as long as those volunteers were fully informed. The benefits of moving quickly, I argued, would outweigh the risks.
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I was wrong. After reading many of the responses to my article, some of them outlining the risks in greater detail, I have concluded that (1) the risks are greater than I presented them, and (2) the benefits are not as great as I had thought.

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