David, like you, I’m not a medical doctor. Mind you, that’s a good thing. Medical doctors are not taught to think using the scientific method, which requires use of controls for whatever variables they are considering. Perhaps this is because on a day to day, doctoring basis, they have only the one patient in front of them.

I trained first in biochemistry and toxicology then a postgraduate degree in pharmacology. After that, over 30 years in applied research. Like you, I have extensively perused the learned scientific literature. There is no empirical evidence for the transmission of acute respiratory illnesses, at all. A few dozen papers, attempting to demonstrate symptomatic transmission only. That’s the sum total & EVERY ONE OF THEM CONCLUDED THAT THEY WERE UNABLE TO SHOW TRANSMISSION.

Allegedly, this is true of every illness said to be caused by “viruses”. Unlike respiratory illnesses, where I’ve made a good attempt to identify every relevant paper, I don’t claim to have read every paper on transmission of illness attributed to a “virus”. However, nobody has proffered a paper in any “viral” illness in which transmission of said illness occurred.

People develop illnesses. They don’t catch them.

The claim that they do is a misunderstanding by the public.

Deliberate miseducation in the case of medical doctors.

Lies by the authorities.

Absent transmission, of course, vaccines make no sense whatsoever.