A microbe involved in gum disease could fan the flames of breast cancer. In mice, the oral bacterium can swell the size of existing tumors and even spark the formation of precancerous growths, ...

Long before the Black Death killed millions across Europe in the Middle Ages, an earlier, more elusive version of the plague spread across much of Eurasia. For years, scientists were unsure how the ...

Clues contained in tree rings have identified 14th Century volcanic activity as the 'first domino to fall' in a sequence that led to the devastating spread of bubonic plague.

A major volcanic cataclysm may have been ultimately responsible for the spread of the Black Death across Europe in the 1340s. In a lovely example of scientific investigation at its best, researchers ...

CINCINNATI (WKRC) – At least three cases of the plague have been reported in the United States, with infections confirmed in New Mexico, California, and Arizona. Infectious disease specialists noted ...

Genomic analysis revealed that the plague victims carried nearly identical strains of Y. pestis, confirming for the first time that the bacterium was present within the Byzantine Empire between AD 550 ...

After a El Dorado County resident tested positive for the plague, Californians may be wondering about their risks of contracting the deadly disease. A South Lake Tahoe resident was recently diagnosed ...

"The individual is currently under the care of a medical professional and is recovering at home," El Dorado County officials confirmed Becca Longmire is a digital news writer-reporter at PEOPLE. She ...

A California resident has tested positive for plague after camping in the South Lake Tahoe area. Health officials in El Dorado County believe the individual may have been bitten by an infected flea.

A South Lake Tahoe resident tested positive for plague, health officials reported Tuesday. Officials said they believe the individual was bitten by a flea while camping in the South Lake Tahoe area.

For thousands of years, a disease repeatedly struck ancient Eurasia, quickly spreading far and wide. The bite of infected fleas that lived on rats passed on the plague in its most infamous form — the ...