Quote Originally Posted by VanDerHoorn View Post
Natural immunity produces an antibody and T cell response against different parts of the whole virus.

Vaccination produces a large spike of antibodies but minimal T cell response against one part of the virus (the spike protein).

Variants evolve to get around the spike protein antibodies (hence lower vaccine-induced immunity against variants). This does not apply to natural immunity since there are antibodies made against all parts of the virus.

Antibody levels drop over a period of months but T cell responses (induced by the virus but not the vaccine) can last years or even a lifetime - so after recovering from covid you don’t need boosters ad infinitum.
Very informative Freddy,i have always said that virus is a clever barsteward.