Transcript for Why ‘herd immunity’ isn’t going to happen
As always, ABC chief medical correspondent Dr. Jen Ashton is here with us tracking all the major developments. Let's go to the latest numbers, from Johns Hopkins university, now more than 38.5 million coronavirus cases diagnosed around the world with well over 1 million deaths. 7.9 cases here in the U.S. Dr. Ashton, back to this idea about herd immunity. It's being thrown around again. Tell us about the infectious disease society of America. Strong statement saying this is not something we should be discussing. What are we talking about? Not in the sense of natural herd immunity. This came out last night in the journal "The lancet". What is herd immunity? It's when 60% to 70% is naturally infected or exposed to a virus that is vaccine immune. In this editorial that came out in "The lancet" the writers are clear, quote, there is no evidence for lasting protective immunity to sars-cov-2. They say any pandemic management strategy that relies on immunity from natural infections for covid-19 is flawed because it would result in so many deaths. They finish by saying, quote, controlling community spread is the best way to protect our societies and our economies until safe and effective vaccines arrive. They're doubling down on the masks, the distancing and the hand hygiene. That's a strong statement. They're being clear. Crystal clear. This is a way of life for the undetermined future. That's right. It's not acceptable to suggest that people should be naturally exposed and develop this herd immunity. Way too many lives at stake. Very important to remember.
This transcript has been automatically generated and may not be 100% accurate.