The herd to the rescue: How an invisible shield can keep us healthy - STAT

The herd to the rescue: How an invisible shield can keep us healthy - STAT

The herd to the rescue: How an invisible shield can keep us healthy

By HELEN BRANSWELL AND ALEX HOGAN

ALEX HOGAN/STAT

Because of herd immunity, some communicable diseases are much less likely to find and infect the vulnerable if most of the population is immune to them.

READ MORE