Schools in England have gone back this week, and there's real worry about a surge in Covid infections. What can we learn from what's happened to infections this summer?You can get the Sensemaker newsletter as an email delivered to your inbox once a day. It’s our editors’ pick of the stories that matter most right now, and why, in brief. You can sign up here for free. Or, if you’d like to join Tortoise as a fully-fledged member, activate your 30-day free trial to access all our journalism.For more information on today's episode, visit tortoisemedia.com/listen. Transcripts of each episode will be made available on the same day.  Hosted on Acast. See acast.com/privacy for more information.