WHO says no plague case registered after Russian lab worker’s death

The WHO says the lack of a confirmed diagnosis remains a key uncertainty, with no sign of ongoing transmission.Published On 10 Oct 202610 Oct 2026The World Health Organization (WHO) has said it still does not know what caused the pneumonia that killed a laboratory worker at a Russian plague research institute and that no case of plague has been registered.Russia’s state health regulator told the WHO that tests on the worker and people who had been in contact with her were negative for the dangerous pathogens they tested for, the United Nations health agency said in a statement on Saturday.Recommended Stories list of 3 itemslist 1 of 3Russia denies imposing anti-plague measures after lab worker deathlist 2 of 3US CDC says it’s ‘aware of and closely monitoring’ Russian plague caselist 3 of 3Russian lab worker dies of suspected plague in Siberia; US monitoring caseend of listHer contacts still showed no symptoms, and no further linked cases of severe pneumonia had been found, the WHO added.“Based on the information provided… WHO has not identified evidence of ongoing transmission associated with this event. A key uncertainty remains the absence of a confirmed diagnosis in the deceased...