Also, at the bottom of the article is a list of 'in other developments'. The governor of new york declared a state of emergency on Friday.
Rights do not really exist on extreme situations.
> Will this happen in the US?
Unless the virus can't spread on US territory then Yes.
I mean, the CDC can try, but there will be an immediate stay on the rule by some court or another, and the Supreme Court is EXTREMELY unlikely to lift that stay, unless we're in an absolute apocalyptic crisis.
* upon further research, the main support for freedom of travel is under the Privileges and Immunities Clause https://en.wikipedia.org/wiki/Freedom_of_movement_under_Unit..., but doesn't really matter, it's precedent either way.
(And for good reason -- this disease could easily go on for months. If the CDC can call a mandatory quarantine, does that mean it's valid to cancel elections in the interim? For how long? These are real concerns.)