Flash: 5 hospitals were closed for quarantine in Siberia due to a possible outbreak of plague.

Laboratory technician Daria Shipilova, 28, died yesterday after a flash: a test tube with Yersinia pestis was alive at the Irkutsk Epidemic Prevention Institute on September 25 while handling samples.

A mask mandate has now been introduced at the huge aluminum plant in Irkutsk.

Some American politicians are now calling for a halt to commercial air travel to and from Russia until the situation is resolved.

The first symptoms of pneumonic plague usually begin about 4 to 7 days after exposure. 200 people are under observation.