No, it is not wrong. There are multiple good studies that demonstrate this. Even having recently had one of the other human coronaviruses gives a degree of immunity.

https://www.news-medical.net/news/20...-COVID-19.aspx

so tell me, Oh wise one, how do YOU believe the Spanish Flu died out in 1920? Because the first primitive flu vaccines weren’t available until 1932.


There are nons so blind as those who will not see
- Jonathan Swift 1738