WHO Investigates Possible Plague Death of Russian Lab Worker

銳報SHARPPOST

World

The World Health Organization is working with Russian authorities to determine whether a laboratory worker in the Irkutsk region died of pneumonic plague. No cause of death had been officially confirmed, and laboratory testing was reportedly continuing, WHO spokesperson Christian Lindmeier said at an October 6 briefing in Geneva.

The woman worked at an institute that studies dangerous pathogens, including plague. Lindmeier said WHO’s internal monitoring system picked up media reports of a suspected pneumonic plague death on October 2. The agency contacted Russian health authorities the following day under the International Health Regulations to verify the circumstances, test results, the health of contacts and any potential international public health implications.

In a message sent to WHO on October 6, Russian authorities said the illness initially resembled a typical acute respiratory viral infection and that tests on contacts had detected no pathogens causing dangerous infectious diseases. Lindmeier explicitly attributed that information to the Russian message received during the briefing. He also said all contacts had reportedly been identified and were being monitored, with none showing symptoms at that point.

WHO’s initial assessment put the risk at moderate to low for Irkutsk, low for Russia as a whole and very low for the WHO European Region. Lindmeier said the assessment would be updated as more information became available. The agency had offered support if Russian authorities requested it.

The European Centre for Disease Prevention and Control described the case as pneumonia of unknown origin suspected to be pneumonic plague in its October 6 statement. On the limited information available, it said there were no reports of secondary cases and no evidence of sustained human-to-human transmission that would cause further spread.

Pneumonic plague develops when Yersinia pestis bacteria infect the lungs. ECDC said transmission generally requires close and prolonged contact with an infected person who is already symptomatic. It recommended isolation and appropriate treatment, assessed by a specialised healthcare provider, for suspected or confirmed patients, along with rapid identification and monitoring of close contacts.

WHO’s plague factsheet says confirmation requires laboratory testing, which can identify the pathogen in samples such as blood, sputum or pus from a swollen lymph node. Pneumonic plague can spread through infectious respiratory particles, and prompt antibiotic treatment can be effective.

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