What we know about death of Russian lab worker in plague institute

The lab in Irkutsk, where the Russian worker died, has long been suspected of developing bioweapons, according to author Annie Jacobsen, who recently released her nonfiction book, "Biological War: A Scenario." Leigh Kiniry reports.

The mother of a Russian lab worker who reportedly died of the pneumonic plague has rejected claims about her death.

The mother of the Russian scientist who died in a suspected plague outbreak in Siberia denies the reports that her daughter was infected after breaking a test tube — and instead suggested Russian officials “simply let my daughter die.”

Svetlana Shipilova, the mother of the anti-plague institute worker who died in Russia, has reportedly spoken out following her daughter's death.