Russia reports a worker at a Siberian plague institute got pneumonia from an unknown cause and died

1. last week
   The woman died in a hospital in Shelekhov
2. Friday
   The hospital was placed under quarantine and Anna Popova met with Gov. Igor Kobzev in Irkutsk
3. Saturday
   The Irkutsk Aluminum Plant required staff to wear masks as a precaution
4. Sunday
   Rospotrebnadzor announced she had 'pneumonia of unknown etiology' and found no related pathogens
5. Monday
   A state TV station in Irkutsk reported her death, and Kremlin spokesman Peskov commented on the case

“Better be safe than sorry.”