Virologists claim that for every so-called “virus” caused disease, there’s a specific non-living submicroscopic particle called a “virus” that somehow can travel great distances, freely enter a human body, find its way to a specific cell type, attach itself to it, inject its genetic material into
it, hijack its machinery. & replicate itself by the thousands, all of which then burst out of the cell & go on to target thousands of other cells of the same type in that body, causing the specific disease. It’s further claimed that even after that host body produces so-called “antibodies to halt their action, they can easily mutate themselves & continue performing their nasty deeds! It’s interesting to note however that none of those actions have ever actually been observed, since these particles are so small that they can only be seen in “still” images taken with an electron microscope after much adulterating preparation.
Also, they’ve never been able to take any of those ‘virus” particles by themselves (with nothing else added), introduce them into an living organism via a natural mode of entry. & produce the disease they’re alleged to cause.

H/t Topochico