The Economist @TheEconomist
On “Babbage”, @Kwong_Laura, a public-health researcher at @UCBerkeley, talks to @kncukier about how the largest-ever investigation of mask efficacy, conducted in Bangladesh, found simple ways to encourage people to mask up https://t.co/J20fgNwzfz https://t.co/BZbzplCNRY — PolitiTweet.org