Pneumonic plague is the most dangerous plague form, transmitted through respiratory droplets, threatening rapid outbreaks and requiring swift public health action.
A laboratory worker at the Irkutsk Anti‑Plague Research Institute has died after falling ill on 30 September–2 October. Russian authorities have diagnosed "pneumonia of unknown aetiology" and said tests found no pathogens linked to her work; local media reported suspected pneumonic plague and nearly 200 contacts were placed under observation. International health agencies are monitoring the situation.
A Russian lab worker has died amid reports of pneumonic plague in Irkutsk. The case has prompted quarantines and widespread monitoring as officials assess risk to the general population. U.S. and international health authorities are watching closely while cautioning that immediate threats remain limited.
A 28-year-old woman at the Irkutsk Anti-plague Research Institute in Siberia has died under investigation for suspected pneumonic plague. Authorities say no cases have been detected among staff connected to the case, and a wide circle of contacts is under daily monitoring. The World Health Organization says risk to the wider public remains low while researchers conduct tests.