The mystery: How did bubonic plague spread so rapidly? Could rat fleas have done it all? A new study points the finger at lice as possible accomplices.
A case in Oregon is a rarity in the United States. It is not expected to spread. But this ancient and deadly disease remains a threat around the world.
The scenes that have played out in India's financial capital this year with COVID-19 bear a striking resemblance to what life was like when the bubonic plague hit more than a century ago.
