Arizona Death Renews Concerns About the Plague's Persistence

Imagine a very old sickness called the plague, like something from a long-ago time.

It still pops up sometimes.

There are different kinds, and one kind can spread when people cough or sneeze.

You can also catch it from fleas or animals.

Every year, a few people around the world get the plague.

Doctors are good now, but you still need to be careful.