Maybe look up the actual study??Don't see the point of this article. Quite a mess of conflicting things. Very confusing to read.
Basically, it settles whether natural immunity or vaccine provides better protection. Natural immunity all the way!! Although natural immunity + vaccine is better still.
The outcome is that natural immunity is just as good, if not better than vaccine induced one. As such, a proof of previous infection should be recognized as such and should form part of the vaccine passport record.
Study conclusion as follows:
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.
And a link
Comparing SARS-CoV-2 natural immunity to vaccine-induced immunity: reinfections versus breakthrough infections
Background Reports of waning vaccine-induced immunity against COVID-19 have begun to surface. With that, the comparable long-term protection conferred by previous infection with SARS-CoV-2 remains unclear. Methods We conducted a retrospective observational study comparing three groups...