Inside the Plague Research Labs at the Heart of a Russian Mystery

Inside the Plague Research Labs at the Heart of a Russian Mystery

A Russian researcher, who recently died from an unknown illness, was working at a remote anti-plague facility in Siberia.

The lab is one of many such facilities in former Soviet states, which are shrouded in secrecy and rarely visited by foreigners.

The mysterious nature of the researcher's death has raised concerns about potential biological threats.