She was a member of the CDC.
And yes, the science does say you're only contagious if/when you show symptoms, which is why she and others (like California, which just announced a mandatory 21-day period as well) who go to those countries have to go under quarantine too. To make sure those symptoms *don't* show up and if they do, to take care of it without having risked exposing themselves to others.
It's not about panic or being "anti-science" which is a popular (and ironic, in this case) refrain nowadays. It's about measures that are needed. Yeah it sucks but you know what would suck more? Those who came back ending up developing symptoms and giving them to a family member or a friend. If we're not going to issue visa or travel bans, then we at the very least have to institute quarantines for people who are coming from there especially in a health worker capacity. What lighter measures are there supposed to be? "Self-monitoring" like that ******* doctor?

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