U.S. officials are monitoring the death of a young laboratory worker at a Russian institute that studies plague, after quarantines in Siberia fueled speculation about pneumonic plague. Russian authorities say the cause was pneumonia of unknown origin, and no plague infection has been confirmed.
For American households, the immediate risk is very low. The case matters because pneumonic plague is the only form of the disease that spreads from person to person, and because public health experts depend on fast, transparent reporting when a lab-linked illness occurs.
