So 3 staff had gotten sick that flu season. Staff who work with infectious diseases and probably get every cough and cold checked out just in case. Seems pretty baseline average to me.
That would be unusual. Given the proximity to the covid19 outbreak, there's a high probability that's the first known cases of covid19 - if confirmed.
People in China routinely go to hospitals for colds. It's cheap, and it makes you feel better, so why not.
Its already incredibly common for average Chinese people to go to a hospital for a cold, and I'd expect someone working in a virology lab would be even more likely to do so.
Maybe you're right, let's see how it plays out.
But looking at the sibling comment, you'd have to be right about it being ordinary not for general citizens but for experts in infectious disease - which is unlikely. Those kinds of people don't seek treatment for a virus unless it's serious. They already know there is no treatment. I even know that and don't seek treatment, and I'm no expert.
Those are exactly the things a Chinese hospital will administer.
If you were presenting to a hospital with Covid beyond what you might feel for a flu, you would be reporting difficulty breathing or loss of smell and taste.
However, they had symptoms consistent with seasonal illness.
So it's pretty obvious that the typical Chinese reaction is the best fit.