Russian authorities have sought to allay global worries over the death of a young woman who worked at a Siberian anti-plague laboratory. But moves to isolate her contacts and introduce new disease-control measures at local hospitals have raised concerns among people who fear they’re not being told the full story.

Moscow urged to disclose details of suspected outbreak amid growing scepticism of the official version of events

Almost 200 people who had contact with Shipilova were placed in strict quarantine or under observation, and several hospitals in the city of Irkutsk have been closed for weeks.

Russia says it's open to a Trump-Putin phone call as concern and questions mount over a woman's death of "pneumonia of unknown origin."

President Donald Trump said Wednesday that U.S. officials do not believe the death of a Russian laboratory worker was connected to a bioweapon.

Russia’s public health watchdog, Rospotrebnadzor, said Sunday the lab worker was diagnosed with “pneumonia of unknown etiology,” meaning its origin was not known.

Ukrainian president Volodymyr Zelenskyy in a video message blamed Russia for Black Sea attack and warned that latest intelligence suggested Russia was preparing a "massive strike" on Ukraine.