[per loin]

Wouldn't finding the virus be definative?

[Domestic Church]

But it says they are "testing for the presence" of the virus. They aren't saying they are actually finding the virus itself under electron microscopy. Maybe they are testing for a molecular biochemical trail. I'm guessing there is a possibility a positive result could be an indicator for some other entity as well. They didn't specify the test or indicate it was what the German and the Netherlands microbiologists used. Who knows. Add the mysterious bumping off of microbiologists to this and maybe they don't want anyone to know what they know,lol.