As I understand it, antibodies only last a month within the blood before they degrade. It is the memory B cells that produce them that last years. https://en.

As I understand it, antibodies only last a month within the blood before they degrade. It is the memory B cells that produce them that last years. https://en.wikipedia.org/wiki/Memory_B_cell https://en.wikipedia.org/wiki/Memory_B_cell https://www.quora.com/What-is-the-lifespan-of-an-antibody-in-the-body-Can-a-person-be-immune-to-certain-diseases-forever https://www.quora.com/What-is-the-lifespan-of-an-antibody-in...