A worker at a plague research institute in Siberia has died, and nearly 200 of her contacts are under medical observation.
Russian authorities deny a link to the bacterial infection.
The US is monitoring the situation.
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The original report was published by Deutsche Welle. WorldPing does not claim that reporting — this page summarises and contextualises it.
Read the full report at Deutsche WelleLiving hubs that keep updating as this story develops.
According to local media reports, as many as 189 people have also been placed under medical observation in Irkutsk in Eastern Russia.
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