Alterations to a single gene in the plague bacterium's genome have shed light on a method the germ has used to survive and spread through the ages.

Worldwide, 3,248 human plague cases were reported from 2010 to 2015, most commonly in the Democratic Republic of Congo, Madagascar and Peru, the World Health Organization found.

The plague sounds like something out of a history book. But the disease—nicknamed the “Black Death” or “Great Pestilence”—that killed more than 25 million people, about a third of ...

Some studies have suggested that Yersinia pestis, the bacterium that causes the plague, spread too quickly during the Black Death of 1346 to 1353 and other outbreaks to be the sole work of rats ...

Plague is very rare, with an average seven cases reported annually in the U.S. Colorado public health officials have confirmed a human case of plague in a Pueblo County resident, according to the ...