Russia plague: What we know about the suspected case reportedly linked to a lab worker’s death

Image: Scanning electron microphotograph depicting a mass of Yersinia pestis bacteria (the cause of bubonic, septicemic and pneumonic plagues) in the foregut of the flea vector. Image credit: Rocky Mountain Laboratories, NIAID, NIH via Wikimedia Commons. Public Domain. Article by Elsa Ohlen. CNBC – updated October 5, 2026.

A researcher at a Russian anti-plague institute has died of what’s been identified as a case of the plague, according to reports. Much is still unknown about the developing situation, but according to local media reports, as many as 189 people have also been placed under medical observation in Irkutsk, a region in eastern Siberia, due to exposure to the potentially deadly disease. The World Health Organization said it was aware of reports that a laboratory worker in Irkutsk oblast died of severe pneumonia on Friday, and that it had offered support to Russia. […]

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