Article Summary

A lab worker in Siberia died after falling ill, sparking fears she might have contracted pneumonic plague from a research accident, but Russian authorities say there's no evidence she was infected with any lab pathogen. The article raises concern by highlighting the severity of plague and the secrecy around her death, while noting that health officials found only routine viruses in people who had contact with her. It emphasizes uncertainty and potential risk, even though official investigations have ruled out a lab leak.