Yu et al. in 2008 (NATURE): Did Yu et al. show us in 2008 that NATURAL exposure immunity was bullet-proofed, robust, life-long, at least 100 years long? Yes! looking at antibodies derived from

survivors from B cells of 1918 influenza pandemic; 100 years old! of 32 individuals tested born in or before 1915, each showed seroreactivity with 1918 virus, nearly 100 years after; Athenian Plague

Did Howard Njoo and Theresa Tam of PHAC Canada know that there is no scenario whereby a vaccine can confer more protection than natural immunity, did Fauci and Francis Collins of NIH, NIAID USA, did Hahn know?

Yes they did, they are all complicit liars in the greatest fraud in history and their lies KILLED people. Imagine I and you could find this 2008 study but they did not know. We even have evidence of natural immunity from the Athenian Plague 2,500 years ago.

Natural exposure immunity evidence existed even historically from the Athenian plague of 430 BC whereby historical documents showed that recovered persons were protected when re-exposed to infection

'The same man was never attacked twice and certainly not fatally', this was known dating back 430 BC (2,500 years ago); this is natural immunity (natural acquired-adaptive immunity) that doctors disregarded for COVID

Researchers ‘took advantage of the 1918 virus sequencing and the resultant production of recombinant 1918 haemagglutinin (HA) protein antigen to characterize at the clonal level neutralizing antibodies induced by natural exposure of survivors to the 1918 pandemic virus…show that of the 32 individuals tested that were born in or before 1915, each showed seroreactivity with the 1918 virus, nearly 90 years after the pandemic. Seven of the eight donor samples tested had circulating B cells that secreted antibodies that bound the 1918 HA…isolated B cells from subjects and generated five monoclonal antibodies that showed potent neutralizing activity against 1918 virus from three separate donors. These antibodies also cross-reacted with the genetically similar HA of a 1930 swine H1N1 influenza strain, but did not cross-react with HAs of more contemporary human influenza viruses.’

‘These studies demonstrate that survivors of the 1918 influenza pandemic possess highly functional, virus-neutralizing antibodies to this uniquely virulent virus, and that humans can sustain circulating B memory cells to viruses for many decades after exposure—well into the tenth decade of life.’

https://www.nature.com/articles/nature07231