Its main problem is no one can define COVID-19 as pathogen. This virus proliferate really slowly!
That why no one can detect this virus without gene amplification such as PCR. But PCR has lack of accuracy like made false positive and product false copy amplified.
Then researchers may provide false gene information. You can see this matters are really scary! And very far from solving the problems.
So now we should think about not just single but mixed infection like flu. Please care about flu before you suspect COVID-19 this upcoming season’s.