Contrarian stances, if managed well, are a proven way to get attention. Almost half of the TED Talks take contrarian points of view. And, in investing, no one ignores the contrarians.
So, no matter what the scientific facts, Chris Christie has received plenty of attention because of his contrarian strategy: Not apologizing for ordering the quarantine for Kaci Hickox. This is the era of The Apology. Even when there's not much or nothing to apologize for, the ethos is to provide an apology. Here is the coverage of the No-Apology by David K. Li in The Post.
On that, Christie didn't cave. And his timing couldn't be better. There is buzz that he could be supported to try out his wings for 2016.