stefan hanson.ause i was thinking, "this is terrible, people are dying, and we are letting the infection spread." from the very start, they didn't want to--they didn't believe it was going to become an epidemic in sweden at all. so, they didn't take any measures to be prepared for an epidemic. the attitude is taking things too lightly and not causing panic. and then they also had in the back of their mind, "okay, we are going to create herd immunity, so we don't mind too much if young people are infected." the problem is that i don't see any science. there's no scientific background to this strategy. announcer: in a migrant neighborhood, stefan hanson's team sets up shop. his clinic offers an immediate test for covid-19 antibodies, confirming they've already caught the virus. stefan: today, we are checking antibodies in a suburb of stockholm where we know there have been quite a lot of cases of corona infection. so, the people here are almost all the immigrants. this is particularly a somali area. a