A Russian laboratory technician died at a plague research centre in Siberia, raising fears of a potential pneumonic plague outbreak. The U.S. Department of State, through Secretary of State Marco Rubio, has said the United States is closely monitoring the situation, but does not view it as a cause for alarm.
Irkutsk’s governor announced the cause of death was “pneumonia of undetermined etiology” and that no microorganisms linked to the woman’s work were found in her biological samples. Russian health officials say no other staff have sought medical attention.
Unconfirmed reports suggested the woman fell ill after breaking a test tube containing Yersinia pestis or during a field trip to an area where the bacterium is found among wild rodents. Over 200 people known to have had contact with the deceased are reportedly under medical observation as a precaution.
In a brief statement to reporters, Rubio noted the concern that the pathogen could have spread within the lab and explained that if it escaped, it could quickly transmit. He added that although the U.S. is paying close attention, the situation does not warrant widespread panic.
Russian Kremlin spokesman Dmitry Peskov urged the public to ignore rumours and rely on official statements from Rospotrebnadzor. The watchdog said a biological safety team inspected the Anti‑Plague Institute and found no emergency situation.
Yersinia pestis, the bacterium that caused the Black Death in the 14th century, remains in certain parts of the world and can cause fatal pneumonic plague if untreated, but can be curable with antibiotics. Scientists say it is still studied to better understand its properties and potential risks.
