Sorry but that scenario presupposes events that have yet to happen.For such extensive immunity to occur, the susceptible worldwide population would have to become infected to some extent with COVID 19, and survive. Yet thus far less than 5% of the world’s population has had such encounters with this virus. Absent massive vaccinations, this virus has to circle the globe for 3-5 years as did the “Spanish Flu”, infect, sicken and kill far more before the population immunity the authors describe occurs.Massive, effective vaccinations are the only way suffering, deaths, social, political and economic disruptions will be avoided. Sadly no genetic clinical test has been designed to identify just who in fact are susceptible to this virus.
My understanding is that these so-called vaccines only provide three to six months protection, and even then do not prevent infection but simply reduce the severity of the symptoms. I think it’s going to have to go around the world several times one way or the other.
For what it’s worth my quick research indicates that only about 33% of the worlds population was infected by the Spanish Flu a hundred years ago.
Don't buy the hype.