A city in Brazil where covid-19 ran amok may be a ‘sentinel’ for the rest of the world

So many people have gotten sick in Manaus that researchers say the virus is running out of people to infect.

 https://www.technologyreview.com/2020/09/22/1008709/brazil-manaus-covid-coronavirus-herd-immunity-pandemic/?truid=e6a9a97f971519b8818ba7420a6d576d&utm_source=the_download&utm_medium=email&utm_campaign=the_download.unpaid.engagement&utm_term=subs&utm_content=09-23-2020&mc_cid=b12c875937&mc_eid=e25735476a