World

Mystery surrounds young worker's death at Russia lab

By AAP Newswire

Oct 11, 2026

A medical staffer test systems for the diagnosis of coronavirus — A Russian lab worker fell ‌ill and died in mysterious circumstances. -AP

The World Health Organisation still doesn't know what caused the pneumonia that killed a ‌Russian lab worker at an anti-plague research centre in Siberia.

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The WHO said the Russian state regulator reported that tests of the lab worker and those who came in contact with her were negative for the high-threat pathogens tested, ‌that her contacts ‌still showed ⁠no symptoms, and that no further linked cases of severe pneumonia had been identified.

"Based on the information provided ... (the) WHO has not identified evidence of ongoing transmission associated with this event. A key uncertainty remains the absence of a confirmed diagnosis in the deceased laboratory worker," it ⁠said in a statement.

The lab worker fell ‌ill and died in undisclosed circumstances on October 2, prompting authorities to quarantine about 200 people and ‌causing public health fears on social media.

Global health officials have been extra alert to fatal pneumonia cases of undetermined cause since the COVID-19 pandemic, which began with a cluster of fast-spreading fatal respiratory illness in China. The cause of individual pneumonia cases can often not be ‌determined.

Russian authorities have said the lab worker was appropriately vaccinated and that they found no microorganisms linked to her work in her body.

On Thursday, Russia said it had completed health checks on all the worker's contacts. It says it had provided full information to the WHO according to established procedures.

with AP