Go back to October and see how many people had merely a cold or more severely, pneumonia that will most likely be the Covid 19............Reports like this come from everywhere and some people report symptoms very similar to Covid.
Not a proof of anything until they are tested for antibodies.--but yes, a hint that the virus was around much longer than we think.
We need data. Now. Not "models", tea leaf reading or speculation. Focus on confirmed & tangible hot spots, loosen things up everywhere else and let us get on with our lives. Where I'm at we're on the decline side of it, yet every few days some official tightens the screws, convinced that's somehow gonna make things better - enough already.