"When a person recovers from covid they have immunity t". ....... that's what I was saying alright Wal... but of course its worth noting that first you have to be infected with covid and any consequences that go with it. You take that risk first.
you do misunderstand the immune response though. the report that was put out by the CDC (US) was into reduced B cell evolution to adapt and so the B cell count falls off. these cells are the ones responsible for remembering the virus (proteins and all in mRNA). Yet they still serve the purpose and trigger a T cell response as soon as the virus appears. Just a tad slower than first vaccinated (to 6 months) but still much quicker than a naive, unprepared immune response.
moreover the CDC report was focused on the reports of falling immunity in Israel and some US states and this concerned Pfizer. the other mRNA vaccines have yet to show the same issue and the report didn't include the AZ or other vaccines.
So while the natural, pre-exposed immune system response is, yes, superior to a vaccinated response...... just stay safe Wal.
never forget that everyone has a different immune system and some don't work as well as others.
