Russian public health agency Rospotrebnadzor stated that Darya Shipilova died of pneumonia of unknown origin and that tests found no pathogens linked to her laboratory research.

From the article‘Not great, not terrible’: Why nobody trusts Russia to tell the truth about plagueAlso in How Moscow’s secrecy about a suspected plague case follows a Soviet-era pattern, Moscow's Secrecy About Suspected Plague Case Follows a Pattern From the Soviet Era, The WHO seeks more details on the death of a plague research lab employee in Russia, Russian official seeks to turn the page on a suspected pneumonic plague case but questions remain, At the center of Russia’s plague scare, residents ‘don’t trust’ officials – but have little other choice | CNN