lethal virus

下記の記事が出ている。

　US lifts ban on lethal virus experiments despite security risks
　BBC: 20 December, 2017
　http://www.bbc.com/news/world-us-canada-42426548

　A Federal Ban on Making Lethal Viruses Is Lifted
　New York Times: December 19, 2017
　https://www.nytimes.com/2017/12/19/health/lethal-viruses-nih.html