Pneumonic Plague
Russia

White 100% 100% Arial Black 50% Black 0% 100%75%50%25% 100%75%50%25%0% 100%75%50%25%0% 00:00 01:41 01:41 01:42 Oct. 5, 2026, 3:46 PM EDT The death of a 28-year-old woman who [worked in an anti-plague laboratory](https://www.nbcnews.com/world/europe/russia-plague-suspected-lab-worker-dies-200-medical-observation-rcna601559) in Russia is raising concerns about what caused her illness. The woman died Friday, according to the World Health Organization, with no cause of death confirmed. A Russian official said the woman died of pneumonia of “undetermined” originand did not link her death to her work at the Irkutsk Anti-Plague Institute of Siberia and the Far East. State Department said, however, that it’s monitoring reports of a fatal case of suspected pneumonic plague in the Irkutsk region, in southeastern Siberia, in coordination with the Centers for Disease Control and Prevention. Staff at Russia's consumer and health watchdog Rospotrebnadzor in Moscow on Monday.Igor Ivanko / AFP via Getty Dr.

12 hours ago · The U.S. says it is closely monitoring a potential case of pneumonic plague in Russia after a laboratory worker who studied the disease fell ill and died.

2. Russia plague outbreak... # Russia plague outbreak after reported death of lab worker: what you need to know 1. Kent ## What happened? A laboratory worker at an anti-plague research institute near Irkutsk, in the Siberian region of Russia, has reportedly died after being diagnosed with a pneumonia of “unknown” origin.

- All - Centres ## Rapid reaction: Suspected plague death in Russia reported 5 October 2026London School of Hygiene & Tropical MedicineLondon School of Hygiene & Tropical Medicinehttps://lshtm.ac.uk/themes/custom/lshtm/images/lshtm-logo-black.png Share Brendan Wren, Professor of Microbial Pathogenesis, LSHTM On Monday 5 October 2026, [it was reported](https://www.theguardian.com/world/2026/oct/05/russia-lab-worker-possibly-dies-of-plague-siberia-quarantine-measures-irkutsk) that a 28-year-old female laboratory worker at a Russian institute researching plague, who may have been exposed to pneumonic plague, has died. The incident, which took place at the Irkutsk Anti-Plague Research Institute of Siberia, reportedly prompted authorities to place nearly [200 people under observation](https://www.nbcnews.com/world/europe/russia-plague-suspected-lab-worker-dies-200-medical-observation-rcna601559) at a local hospital. Russia’s national public health agency, Rospotrebnadzor, said that the technician had contracted “pneumonia of unknown aetiology [cause].” "Reports from Russia about this case suggest that the infection resulted from an accidental inoculation following a broken test tube, highlighting the importance of strict biosafety procedures when handling dangerous pathogens. In this case, I would not describe the accidental laboratory-based transmission to a single individual as an outbreak, and it seems unlikely that it will lead to a wider epidemic. Globally, around 2,000 cases are reported each year, mostly in areas where the disease remains endemic, including regions of the western United States, public health authorities within these regions have extensive experience in managing suspected exposures. Study at LSHTM Share Copy link ✓ Find any service [AddToAny](https://www.addtoany.com/) A2A

Russia hospitalizes almost 200 people after researcher’s death from plague: Reports Menu - Russia’s public health watchdog said the employee at the center of the case was diagnosed with “pneumonia of unknown etiology.” Russia hospitalizes nearly 200 people after researcher’s death from plague: Reports Alexei Tsydenov, head of the nearby Republic of Buryatia, [said](https://vk.ru/alexey.tsydenov?w=wall421889602_40893) the woman had died from an unspecified form of plague. The update follows local media reports on Friday that a 27-year-old employee at an anti-plague institute had fallen ill with suspected pneumonic plague after returning from a work trip to Buryatia, where an outbreak had been reported near the border with Mongolia, citing Russian Telegram channel Mash. NOW

# Plague epidemic risk in Russia low after death of lab technician, WHO says World Health Organization detects no sign of further outbreak since Darya Shipilova died last week Darya Shipilova, who was 28, died last week, two days after falling ill. Russian authorities have downplayed the incident and [say Shipilova died of “pneumonia of an unknown aetiology”](https://www.interfax.ru/russia/1120228). WHO chief Tedros Adhanom Ghebreyesus urged [Russia](https://www.theguardian.com/world/russia) on Tuesday to be transparent about Shipilova’s death.