OP-ED: A 'me first' approach won't work

India has been devastated. Your country could be next There have been many predictions about how many people have had Covid-19 and whether or not this or that country has reached herd immunity. We have seen this before in Manaus, Brazil, and in India. The optimism is alas always misplaced and occasionally used irresponsibly.We have seen approaches to naturally acquired herd immunity proposed as high-profile ideas for public policy.