WHO says Russia confirms death at research lab, no plague case registered ↧ ↧ WHO says Russia confirms death at research lab, no plague case regi... The World Health Organization said ​on Saturday that ‌Russia's state health regulator confirmed the death ​of a lab ​worker at a plague ⁠research facility ​in Siberia and had ​informed the WHO that no case of plague ​had been ​registered.