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 ...

We all get sick sometimes. Even something pretty minor, like a cold or flu, can be enough to disrupt your life for a few days. When you have a minor illness, it does more than just make you feel ...

Herd immunity can work against the spread of some diseases. There are several reasons why it often works. There are also many reasons why herd immunity won’t yet work to stop or slow the spread of ...

Scientists are getting a better handle on the complexities of how immunity works. Attentive readers might have noticed my absence over the last couple of weeks. I’ve been trying to recover from a bout ...

This is read by an automated voice. Please report any issues or inconsistencies here. Three scientists won the Nobel Prize in medicine for discoveries about how the immune system avoids attacking ...

Herd immunity is the name for a point in time when it's hard for a disease to spread through a group of people. The idea of herd immunity works for some diseases, such as measles. But it's a harder ...

Cases in Texas and other states are on the rise, but most of the infected were not vaccinated. Here’s what to know about the very contagious disease and how immunity works. Today, the U.S. gives ...