The main problem now is that very little time has passed since the beginning of the pandemic. 2 years, in fact, is very little to get a real, comprehensive picture of the situation. The same statistics are kept differently in different countries. What can we say about the real effectiveness of vaccines that have been developed "on the knee", plus the appearance of mutations. Yes, there was not very positive news about the increase in the incidence, and this is attributed to new mutations. On the other hand, today medicine has already received a "feedback"; a stable section of the genetic code of the virus was also recently isolated, which will help to develop / modify vaccines and fight mutations much more efficiently ...
Now the situation reminds me a little of the situation with the outbreak of the influenza virus ("Spanish flu") at the beginning of the 20th century, at the beginning there was also the highest mortality rate, there were several global outbreaks, but now we treat the flu with essentially one pill, or preliminary vaccination
I don't know whether you can compare Spanish Flu with COVID 19. The mortality rate was much higher for the Spanish flu (at least when compared to the original strain of the virus). And during the Spanish Flu, it was mostly young and healthy people who died from the infection. It is just the reverse with COVID 19. More than 90% of the deaths are among the elderly (the proportion of younger people dying from COVID is higher for the delta strain).
Almost everyone in the world got infected with Spanish Flu and those who survived acquired natural immunity. But that is not the case with COVID. Those who got infected with the original strain again got infected with the delta strain and in some cases either required hospitalization or died.
I gave an example with the Spanish flu virus, because it is quite similar in the general picture - mass distribution, tens and hundreds of millions of cases, lack of treatment methods, panic and a lack of understanding of what to do. The disease also proceeded with a similar "pattern" - many were almost asymptomatic, and some groups of people had cyanosis and pneumonia, pulmonary hemorrhages inside the lungs ... True, the virus "eliminated itself", without medications and other things. As contemporaries of events write: "the virus mutated very quickly - at first it became more aggressive and deadly, but, ultimately, weakened, and then completely disappeared."
Whether there will be a complete coincidence with the historical example is difficult to say, now there are higher social standards, a higher standard of living and much better medicine ...
Those who have had COVID also develop immunity, and the recurrent disease is either asymptomatic or with minimal manifestations.
I have not yet heard that globally everyone who had been ill with the "standard" Covid, and fell ill with Delta, would necessarily be hospitalized or die.
