The death of a researcher at a Russian plague research institute from an unknown cause indicates a potential risk to public safety.

Russia reports a worker at a Siberian plague institute got pneumonia from an unknown cause and died Russian authorities say a staffer at a plague research institute in Siberia contracted pneumonia of an unknown cause, and local state TV reported the woman died last week. https://apnews.com/article/russia-disease-plague-researcher-pneumonia-9ddc8e3e064637853407bfd24d8937f5

Don't get rid of those masks just yet... A researcher working at a plague research institute in Siberia died last week after being diagnosed with pneumonia of an “unknown” cause, according to multiple reports. The woman has been identified as Darya Shipilova, an employee at the Irkutsk Anti-Plague Research Institute of Siberia and the Far East, in local news reports that say she was 28 years old, Reuters noted. https://www.huffpost.com/entry/russian-plague_n_6ac3a518e4b0f45fd4cd7938