I agree, either this was not picked up over the past decades OR something is happening to the human physiology that means that a common cold is now causing long term damage to the human body.
Something very odd seems to be happening here, I have had colds and recovered, so what is going on.
Maybe it is lack of people getting out in to fresh air, lack of vitimin D exposure to boost immune system, lack of Vitimin C and other vitimins in our diet.
Either that or Mother nature has simply had enough of humans wrecking the planet and has devised a way to wipe us out in addition to things like fires, floods, hurricanes etc.