- The World Health Organisation is investigating reports of a second possible pneumonic plague case in Siberia following the death of a laboratory technician.
- Darya Shipilova, 28, died on 2 October after reportedly being exposed to Yersinia pestis at the Irkutsk Anti-Plague Research Institute.
- Senior epidemiologists have cast doubt on official reports that the infection was caused by a broken test tube, citing strict safety protocols.
- Almost 200 people are currently in medical isolation, while unverified local media report a second fatality displaying severe pulmonary distress.
- WHO director-general Tedros Adhanom Ghebreyesus has urged Russian health authorities to provide transparent information to accurately assess public health risks.
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