https://www.chop.edu/centers-program...tem-and-health
"It is true that natural infection almost always causes better immunity than vaccines"
https://www.medrxiv.org/content/10.1....24.21262415v1
"Conclusions This study demonstrated that natural immunity confers longer lasting and stronger protection against infection, symptomatic disease and hospitalization caused by the Delta variant of SARS-CoV-2, compared to the BNT162b2 two-dose vaccine-induced immunity. Individuals who were both previously infected with SARS-CoV-2 and given a single dose of the vaccine gained additional protection against the Delta variant."
https://www.cdc.gov/coronavirus/2019...nes/facts.html
"When an immune response begins, antibodies are produced, creating the same response that happens in a natural infection."
https://www.science.org/content/arti...-remains-vital
"The natural immune protection that develops after a SARS-CoV-2 infection offers considerably more of a shield against the Delta variant of the pandemic coronavirus than two doses of the Pfizer-BioNTech vaccine" " It’s the largest real-world observational study so far to compare natural and vaccine-induced immunity to SARS-CoV-2, according to its leaders." “It’s a textbook example of how natural immunity is really better than vaccination,”