The WHO says the deficiency of a confirmed diagnosis remains a cardinal uncertainty, with nary motion of ongoing transmission.
Published On 10 Oct 2026
The World Health Organization (WHO) has said it inactive does not cognize what caused the pneumonia that killed a laboratory idiosyncratic astatine a Russian plague probe institute and that nary lawsuit of plague has been registered.
Russia’s authorities wellness regulator told the WHO that tests connected the idiosyncratic and radical who had been successful interaction with her were antagonistic for the unsafe pathogens they tested for, the United Nations wellness bureau said successful a connection connected Saturday.
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Her contacts inactive showed nary symptoms, and nary further linked cases of terrible pneumonia had been found, the WHO added.
“Based connected the accusation provided… WHO has not identified grounds of ongoing transmission associated with this event. A cardinal uncertainty remains the lack of a confirmed diagnosis successful the deceased laboratory worker,” it said.
What happened?
The idiosyncratic fell sick and died successful undisclosed circumstances connected October 2, prompting authorities to quarantine astir 200 radical and stoking nationalist wellness fears connected societal media.
Russian media named her arsenic Darya Shipilova, a 28-year-old laboratory technician astatine the Irkutsk Antiplague Research Institute of Siberia and the Far East, successful the Siberian portion of Irkutsk.
Pneumonic plague, a lung corruption caused by the bacterium Yersinia pestis, which is usually recovered successful tiny mammals and their fleas, was suspected aboriginal on.
The politician of neighbouring Buryatia said the pistillate had “died, possibly of the plague”.
Russia’s wellness watchdog Rospotrebnadzor said she had been diagnosed with “pneumonia of chartless aetiology”.
Russian authorities said the idiosyncratic was appropriately vaccinated and that nary microorganisms linked to her enactment were recovered successful her body. They accidental post-mortem tests did not observe plague.
On Thursday, Russia said it had completed wellness checks connected each her contacts and had fixed the WHO each the information.
A section authoritative said connected October 6 that 60 percent of those placed successful quarantine had already been released.
WHO main Tedros Adhanom Ghebreyesus asked Russia connected Wednesday to respond to media reports of a 2nd worker with pneumonia of undetermined cause. Russia dismissed the reports arsenic “false information”.
The United States has besides called connected Russia for transparency.
Global wellness officials person been other alert to deadly pneumonia cases of chartless origin since the COVID-19 pandemic, which began with a clump of fast-spreading, fatal respiratory unwellness successful China.
The origin of idiosyncratic pneumonia cases often cannot beryllium determined.
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