We are raiding the Guardian Long Read archives to bring you some classic pieces from years past, with new introductions from the authors This week, from 2020: Cholera has largely been beaten in the west, but it still kills tens of thousands of people in poorer countries every year. As we search for a cure for coronavirus, we have to make sure it will be available to everyone, not just to those in wealthy nations. Help support our independent journalism at theguardian.com/longreadpod