A laboratory worker at a plague research institute in Siberia fell ill and died on 2 October 2026. Initially, authorities placed approximately 200 people under quarantine.
Health watchdog Rospotrebnadzor stated that the worker died from an unknown type of pneumonia, and no relevant pathogens were found in anyone who came into contact with her. Authorities also quarantined everyone who had been in contact with the worker as a precaution.
Following nearly 5,000 lab tests, 90% of the quarantined individuals have since been released. Furthermore, Russian health regulator stated on Wednesday that there were no risks of an epidemic breaking out.
The World Health Organisation in Geneva requested Russia to provide additional details regarding the case. Russia's health watchdog rejected the theory that the worker dropped a test tube containing live bacteria at her workplace.
The Irkutsk Anti-Plague Research Institute of Siberia and the Far East was established in 1934. Plague is known to be endemic in Siberia.
Most human plague cases over the last six years originated from the Democratic Republic of the Congo and Madagascar. The most common form of the disease is bubonic plague, which typically results from an infected flea biting a person.
Pneumonic plague represents the least common yet most virulent form of the illness. Infected individuals usually present with flu-like symptoms after an incubation period spanning one to seven days.
