I'm dumping this here so instead of having to answer people over and over again I can link them to this because I'm already sick of it.

You stop producing antibodies once an infection is over. It's normal.

After an infection has passed, antibody production stops, most of the immune cells die and a handful survive. These are memory T and memory B cells.

Memory B cells can produce high affinity IgG antibodies rapidly upon encountering the same infection again.

Memory B cells can produce 100 -1000x fold higher an antibody response within 24 hours to re-encountering a pathogen.

Producing an overwhelming immune response that neutralises an infection near immediately.

This acts to prevent replication of the virus, spread within your tissues, and because the infection is squashed so fast you don't develop symptoms. In the vast, vast, majority of cases this occurs before you become infectious meaning you can't spread the infection.

Antibodies arn't immunity, are we all clear on this now?

Memory immune cells are immunity. End of discussion.

If we can teach this in standard grade biology to 14 years olds. Journos and the public are capable of understanding it too.