除了确认一名实验室工作人员死亡外，俄罗斯官员几乎没有提供任何信息。
Beyond confirming the death of a lab worker, Russian officials have provided little information.
有人询问该事件是否与该国的生物战计划有关，西方情报机构称该计划仍在活跃。俄罗斯的保密意味着尚不清楚威胁有多严重。
Some people have asked if the incident is connected to the country’s biological warfare programme, which Western intelligence services say is still active Russian secrecy means it is unclear how grave the threat is