- Hot Topic
There is a well-known way to stop COVID-19 from spreading unchecked: Have a large enough proportion of people develop immunity to the virus that causes it. The problem is, the only two ways to do so are to discover and widely administer a vaccine or have a whole lot of people get sick. This article explains what “herd immunity” is, how people might impart it, and how they might balance that with keeping people safe in the short term. The article will benefit anyone trying to make sense of the strategies being proposed or implemented to limit the devastation of COVID-19.
About the Author
Antonio Regalado is senior editor for biomedicine for MIT Technology Review.