In order to reach herd immunity, health experts say ideally 90 percent of Americans would have to get vaccinated.
That’s tricky because only a little more than half the people in the U.S. said they’ll get the shot.
In order to reach herd immunity, health experts say ideally 90 percent of Americans would have to get vaccinated.
That’s tricky because only a little more than half the people in the U.S. said they’ll get the shot.