It proves that it, whatever it is, is infectious.
It proves that *something* exists which acts like an infectious influenza, and tests positive for influenza. At some point you have to start noticing that it acts like a duck, talks like a duck, etc it's a duck

> you are skipping the fundamental premise and jumping to how infectious are they

BECAUSE YOU SAID THERE WAS NO STUDIES SAYING IT WAS INFECTIOUS

that's why