Pneumonic Plague: Symptoms, Fatality Rate and Treatment After Darya Shipilova’s Death in Russia
Pneumonic plague is the deadliest form of plague and can be fatal within 24 to 48 hours if untreated. Russia has quarantined nearly 200 people in Irkutsk after the death of lab technician Darya Shipilova, who reportedly contracted the infection at work.
Pneumonic plague, the rarest and most aggressive form of the disease caused by the Yersinia pestis bacterium, is back in the headlines after Russian authorities in Siberia's Irkutsk region quarantined nearly 200 people following the death of a 28-year-old laboratory technician. The infection attacks the lungs and can spread directly from person to person through respiratory droplets, which is why health agencies treat it as a severe medical emergency. Left untreated, its fatality rate approaches 100 percent, and patients can suffer acute respiratory failure, septic shock and death within 24 to 48 hours of the first symptoms.
How Severe Is Pneumonic Plague?
Unlike bubonic plague, which typically spreads through flea bites, the pneumonic form infects the lungs and can pass between humans without any animal carrier. The incubation period is short, usually one to three days, leaving little time to react once a person is exposed. Who Was Darya Shipilova? Russian Anti-Plague Lab Researcher Dies, Hundreds Quarantined.
Can It Be Treated?
Yes, but timing is everything. Early intervention sharply improves survival rates. Standard antibiotics such as streptomycin, gentamicin, levofloxacin and doxycycline are effective if given within 24 hours of the appearance of symptoms. Siberia Lab Scare: Researcher Dies From Mysterious Infection, Hundreds Placed Under Quarantine.
What Happened In Irkutsk?
The victim, identified as Darya Shipilova, worked at the Irkutsk Anti-Plague Research Institute. Local reports, citing medical staff, said she accidentally broke a test tube containing live Yersinia pestis bacteria while collecting samples. She was admitted to a medical facility in the nearby town of Shelekhov on September 29 with severe respiratory illness. Despite ventilator support, she died on October 1.
Quarantine And Containment Measures
Around 200 contacts, including hospital staff, colleagues and acquaintances, were placed under strict quarantine and medical monitoring, and several hospital wards were sealed. Authorities also cancelled several public events in Irkutsk as a precaution.
Irkutsk Governor Igor Kobzev confirmed the detection of a "particularly dangerous infection" and urged residents not to panic. In a Telegram statement, he said all isolated contacts were being tested regularly and none had shown symptoms or tested positive so far.
Rospotrebnadzor, Russia's consumer safety and public health watchdog, is overseeing the containment protocols, and health teams remain on high alert as the observation window for exposed contacts continues.
(The above story first appeared on LatestLY on Oct 05, 2026 11:27 AM IST. For more news and updates on politics, world, sports, entertainment and lifestyle, log on to our website latestly.com).
