Tyrrell’s rule of three.

In any given year, a third of upper respiratory infections will be caused by rhinovirus.

This post is for parents with fluey children and those who worry about respiratory infections. It comes from the recollections of one of the guys who discovered the first coronavirus. 

If you have read this morning’s post on the return of Rhinovirus and you want a bit more background on this strange and hitherto unknown agent, read on.

The late Dr David T…