Russian authorities have denied implementing anti-plague measures following the death of a 28-year-old laboratory technician from suspected pneumonic plague last Friday, a case that has drawn international scrutiny. Russia's health watchdog Rospotrebnadzor stated on Tuesday that no plague cases have been detected among staff who had contact with the laboratory worker for the past 10 days. The institute where she worked also said autopsy results found no microorganisms linked to her work. US Secretary of State Marco Rubio on Tuesday called on Moscow to share more information, while the World Health Organization (WHO) confirmed it is monitoring the situation.