WHO Demands Vladimir Putin Share Information Regarding Suspected Outbreak of the Black Death Plague

The World Health Organisation has asked Russian authorities for more information after a laboratory worker died from severe pneumonia in Irkutsk, Siberia.

WHO is also seeking clarification about reports of a second employee with pneumonia of undetermined cause.

The Irkutsk case has prompted international attention because the deceased worker was employed at the Antiplague Research Institute.

Initial media reports suggested she may have been exposed to plague bacteria during an alleged laboratory accident. However, no plague outbreak has been confirmed in Irkutsk.

Russian authorities have said no recent plague cases have been registered in the region and have rejected reports of a second infection.

The incident centres on Darya Shipilova (28), who died on 2 October after being hospitalised with severe pneumonia. The circumstances surrounding her illness remain unclear, while Russian authorities have described the pneumonia as being of unknown cause.

In its official briefing on 7 October, Russian authorities told WHO that no recent plague case had been reported in Irkutsk.

WHO said it had placed about 200 contacts in quarantine and requested more information about laboratory testing and the public-health measures taken.

WHO Seeks More Information From Russia

WHO Director-General Tedros Adhanom Ghebreyesus said the organisation was seeking additional information to establish what happened.

He said WHO needed clarification about the cause of the severe pneumonia and the pathogen that prompted public-health measures.

WHO also sought to verify media reports about a second employee with pneumonia of undetermined cause, as it did not yet have the full picture. That distinction matters because neither WHO nor Russian authorities have confirmed that Shipilova died of plague.

WHO said it could not conduct a full risk assessment without additional information. The alleged laboratory accident also remains unconfirmed. Initial media reports suggested Shipilova may have accidentally broken a container holding Yersinia pestis, the bacterium responsible for plague.

WHO described the laboratory-exposure account as an initial media report. It did not present the alleged accident as an established fact.

Rospotrebnadzor, Russia's public-health watchdog, has disputed the more alarming reports surrounding the incident. The agency said there were no epidemic risks for people in Irkutsk or the wider Irkutsk region.

The agency also said medical monitoring and laboratory testing had found no signs of infection or dangerous pathogens among the contacts. It reported that it had conducted almost 5,000 laboratory tests.

Russia Rejects Reports of a Second Infection

Reports of a possible second case have added to the uncertainty. WHO requested information about media reports of a second employee with pneumonia of undetermined cause.

Russian authorities, however, have rejected claims that a second person contracted plague. Rospotrebnadzor has continued to maintain that there is no epidemic risk in the region.

Kremlin spokesman Dmitry Peskov has also criticised what he described as false information surrounding the incident. He urged people to rely on Rospotrebnadzor statements rather than unverified reports.

The response has nevertheless attracted international scrutiny. WHO has called for timely, complete, and transparent information so it can properly assess potential public-health risks.

The organisation has also offered technical support relating to plague and laboratory biosafety and biosecurity. Its current position does not establish that a plague outbreak has occurred.

Plague itself is caused by the bacterium Yersinia pestis. WHO says it usually involves small mammals and their fleas, but people can also become infected through direct contact or inhalation.

Plague has several forms, including bubonic, pneumonic, and septicaemic plague. Pneumonic plague affects the lungs and can spread between people through respiratory droplets.

The disease has a particularly powerful historical association. WHO says the plague was known as the Black Death in the 14th century and killed more than 50 million people in Europe.

Modern plague differs significantly from the historical pandemic in treatment and public-health response. WHO says plague can be treated effectively with antibiotics if it is detected and treated early.

For now, the key issue in Irkutsk is uncertainty, not a confirmed outbreak. WHO is seeking further information, while Russian authorities say testing has found no dangerous pathogens among monitored contacts.