Russian authorities have enacted "anti-epidemic measures" following the death of a laboratory worker at the Irkutsk Research Anti-Plague Institute in Shelekhov, Siberia. The 28-year-old female technician died after being diagnosed with pneumonia of "unknown" origin, as reported by Rospotrebnadzor, the Russian agency responsible for infectious diseases. Maxim Modin, the mayor of the Shelekhovsky district, confirmed that a comprehensive set of anti-epidemic measures is being implemented. The woman's death was confirmed by officials last week.
The hospital where the worker was treated has been placed under quarantine, and several departments have suspended patient admissions and discharges. Other hospitals in the region have also reportedly closed. Rospotrebnadzor stated that "no microorganisms associated with the employee’s professional duties were detected in samples taken from the patient," according to Modin. There have been no reported cases of infectious diseases among institute staff in the past 10 days, and all recent contacts of the employee are undergoing testing.
Unofficial reports indicate that nearly 200 individuals are under observation. Rospotrebnadzor previously described the "sanitary and epidemiological situation" in Shelekhov and the state capital of Irkutsk as "stable."
The Anti-Plague Institute employs around 95 researchers and is responsible for monitoring and preventing outbreaks of high-risk bacterial and viral infections in Siberia and Russia’s Far East. Alexei Tsydenov, head of the neighboring republic of Buryatia, stated that the employee may have died "possibly from the plague," but emphasized that "there are no plague outbreaks" in Buryatia.
Pneumonic plague, caused by the bacterium Yersinia pestis, can spread easily between individuals through respiratory particles. The other two types of plague typically spread through contact with infected fleas, animals, or tissues. An aluminum plant near the laboratory has advised staff to wear masks as a precaution. Artem Fominikh, the director of Irkutsk Aluminum Plant, urged calm amid circulating rumors and conflicting reports.
Gennady Onishchenko, a former head of Rospotrebnadzor, stated that the infection is "most likely not the plague," and even if it were confirmed, he believes there would be no spread of the disease due to the onset of cold weather. A spokesperson for the US State Department confirmed awareness of the situation and stated that they are monitoring it closely in collaboration with the CDC and other partners. They encouraged Russian authorities to provide accurate information promptly.
Patients with pneumonic plague typically exhibit symptoms such as fever, headache, weakness, and rapidly developing pneumonia, which includes shortness of breath, chest pain, cough, and sometimes bloody or watery mucus, according to the US Centers for Disease Control and Prevention (CDC). The US Department of Health and Human Services indicated that the CDC is closely monitoring the situation, prioritizing the safety and security of U.S. citizens. The World Health Organization has noted that while plague has a high fatality rate, it is also easily treatable with antibiotics and preventive measures.