Inside the plague research labs at the heart of a Russian mystery

Nearly two weeks after a 28-year-old researcher died from a mysterious infection while working in a Russian plague research laboratory, health officials worldwide continue to seek clarity. Darya Shipilova, a lab worker at the Irkutsk Anti-Plague Research Institute, was initially reported to have contracted pneumonic plague, sparking concerns over the nature of research conducted at the facility and the safety protocols in place. Russian authorities have since ruled out pneumonic plague as the cause of her death, though they have not confirmed the specific pathogen responsible for the pneumonia she suffered. The Irkutsk Anti-Plague Research Institute of Siberia and the Far East, located in Irkutsk, Russia, became the focal point of global attention following the incident. The situation has prompted criticism from the United States and other nations, highlighting ongoing skepticism regarding Russian biomedical research, rooted in historical ties to the Soviet Union's extensive programs for developing biological weapons. The institute itself did not operate as a military facility, but it was part of the broader and secretive "Anti-Plague System." Across the Soviet Union, numerous field sites and research institutes were established to monitor and manage emerging strains of plague and other endemic diseases. These facilities were tasked with eliminating disease-carrying rodents and developing vaccines. Experts suggest that these institutions also supplied pathogen samples to military laboratories engaged in bioweapon development during the Soviet era. Despite the passage of time, many of these facilities remain operational. While those within Russia maintain a high level of secrecy, some in former Soviet states have become accessible to international researchers interested in understanding this complex network. The "Anti-Plague System," although historically associated with the devastating Black Death of 14th-century Europe, a disease caused by the bacterium Yersinia pestis and transmitted through rodents, has been a persistent threat throughout Eurasian history. In response to recurring outbreaks in rural regions, where plague-carrying animals such as rats, gerbils, and marmots are common, the Soviet Union initiated a series of field sites and research institutes in the early 20th century. Susan D. Jones, a veterinary historian at the University of Minnesota, noted that the initial goal of these efforts was to create a central institute capable of monitoring vast areas, particularly the steppes known for harboring large numbers of burrowing wild rodents. Early operations were basic, involving scientists traveling on horseback into plague-prone zones, often residing in tents or local accommodations, and spending their days exterminating rodents, excavating their burrows, and incinerating their food supplies in an effort to eliminate the diseases they carried. These early missions lacked adequate disinfectants and personal protective gear, resulting in considerable danger for those involved. Despite these efforts, the spread of the disease could not always be halted. From the 1920s to the 1950s, the program evolved from eradication to outbreak prevention, leading to the establishment of multiple labs across the USSR. As antibiotics for treating plague were developed, these labs expanded significantly, employing thousands of permanent staff alongside seasonal workers collecting samples in the field. Research conducted at these Soviet-era facilities was described as being concealed behind a veil of secrecy, according to a former anti-plague researcher, Moisey Iosifovich Levi, who wrote in a 1994 essay. Workers were directed not to make connections between their work and bioweapon development programs in military labs, further contributing to the opacity surrounding these operations.