Russian authorities are responding to an incident in which a suspected dangerous infection was released as a result of a laboratory accident in Siberia and a researcher died.

A death at an anti-plague research institute in Siberia has raised questions about a possible laboratory-linked plague infection, but the World Health Organization says the risk of a wider outbreak re...

That has not stopped the rumors — fueled in part by contradictory statements from local officials as well as by a widespread distrust of the Russian authorities, who have in the past concealed emergen...