A protester walks past the E. Barrett Prettyman U.S. District Court House in Washington, on August 1, 2023. Anna Moneymaker/Getty Images Full immunity is just what it sounds like. When a prosecutor ...

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 ...

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 ...

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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 ...

The concept of herd immunity is one of several factors determining when society might come close to returning to normal. Here's a deeper look at how it works.