Might sound alarmist, until you realize that the author is Stewart Baker, a former General Counsel of the National Security Agency, the Assistant Secretary for Policy at the United States Department of Homeland Security from 2005 to 2009 (where thinking about possible attacks, including biological attacks, was a big part of his job), and on security policy more of a big-government conservative than a let-everyone-do-his-own-thing libertarian.
Baker definitely knows facts on this topic that we don’t, so I’d take his advice quite seriously — the details of his argument and his suggestion are at his blog, here, and there’s a follow-up on the bigger picture here. (The news hook prompting his post was this Executive Order issued a few days ago.)