Matthew Yglesias @mattyglesias
So I pressed on this, asking “are you just saying it hasn’t been PROVEN to block transmission in a double-blind clinical study or is there actual doubt?” I was told experience with past vaccines provides real reason for uncertainty. https://t.co/ajYIKcMlnY — PolitiTweet.org
Stephen Smith @smithsj
@mattyglesias Given how many times we've been burned by "we can't be sure" takes during this pandemic, I would be m… https://t.co/Brf7dZnG7w