Here’s what you need to know:
The White House has embraced a declaration by a group of scientists arguing that authorities should allow the coronavirus to spread among young healthy people while protecting the elderly and the vulnerable — an approach that would rely on arriving at “herd immunity” through infections rather than a vaccine.
Many experts say “herd immunity” — the point at which a disease stops spreading because nearly everyone in a population has contracted it — is still very far off. Leading experts have concluded, using different scientific methods, that about 85 to 90 percent of the American population is still susceptible to the coronavirus.
On a call convened Monday by the White House, two senior administration officials, both speaking anonymously because they were not authorized to give