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Back-to-back statements from the U.S. and Russia

The death of a laboratory technician at Russia’s plague research center has drawn close attention in both Moscow and Washington. U.S. Secretary of State Marco Rubio said the incident is being closely monitored because of the possibility that pneumonic plague could spread, but stressed that there is no cause for public alarm at this stage.

Irkutsk regional governor Igor Kobzev said the cause of death was “pneumonia of unknown etiology.” Kobzev said biological samples from the deceased woman showed no microorganism linked to her work.

According to information cited by the governor from Rospotrebnadzor, Russia’s consumer rights and public health watchdog, no additional cases have been recorded among institute staff after the technician’s death. A biosafety team inspecting the Siberian and Far Eastern Anti-Plague Institute in Irkutsk also found no emergency situation.

What is known about the case and the measures being taken

Unconfirmed reports in the Russian press claimed the technician may have fallen ill either after a tube containing a pathogen broke or after a field visit to an area where plague occurs naturally. Russian media also reported that around 200 people who are said to have had contact with the woman were placed under medical observation as a precaution.

Dmitry Peskov, the Kremlin spokesman, urged the public to rely on official statements rather than rumors. The U.S. side also said any possible risk of spread is being taken seriously, but that the available information does not point to a situation that would justify panic.

  • No biological emergency was detected during the inspection at the institute.
  • Officials said no work-related microorganism was found in the technician’s samples.
  • No official record has been released showing that other staff sought medical help after the death.

Why pneumonic plague is being watched so closely

The deceased technician was reported in the Russian press to be a worker named Daria, believed to be in her late 20s. She had recently traveled to the Buryatia region on the Mongolian border, where the bacteria that causes plague, Yersinia pestis, can be found in rodents such as marmots.

Dr. Simon Clarke, a cellular microbiology specialist at the University of Reading, said pneumonic plague is often fatal if left untreated, but can be controlled with antibiotics. He noted that this form can spread from person to person, while emphasizing that concerns about possible transmission do not mean lockdowns similar to those seen during Covid-19.

The Siberian and Far Eastern Anti-Plague Institute was founded nearly 100 years ago in response to an outbreak in the 1920s. The case has once again highlighted that plague, long associated with historic pandemics, remains a public health risk that is still monitored in some regions.

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