Herd immunity is important because it defines when a whole community is protected. That includes people who haven't caught the disease, people who had the illness and recovered, and people who got a ...

There have been hundreds of measles cases reported in the U.S. since the beginning of the year. Here's what you need to know about measles immunity. When you purchase through links on our site, we may ...

Herd immunity occurs when enough people in a group are immune to a specific infection that it cannot spread easily from person to person. Vaccination programs have been successful in creating herd ...

From vitamin C to your microbiome and mindset, the latest science of immunity is often counterintuitive. Here's how to give ...