community immunity

Herd immunity is possible, but cost is high

Dear Doctors: Can you explain herd immunity? We have it with diseases like smallpox and polio, but when it comes to the coronavirus, everyone keeps saying it’s a bad idea. Why wouldn’t it work for COVID-19?

Dear Reader: It’s true that we’re hearing a lot about herd immunity, which is also [...]

By Ask the Doctors • October 5, 2020