Pfizer and AstraZeneca Covid vaccine antibody count start to wane after six weeks – study

Doctor Dan Kaul, professor of infectious disease at the University of Michigan noted: “B and T cells are alive, so they can divide and turn into memory cells and other cell types that can last for many years and react when an infection is again encountered.”

Antibodies are not capable of reproducing, so their numbers tend to drop overtime, as the infection subsides.

Conversely, B cells will continue to sustain a certain level of circulating antibodies for a prolonged period of time.

Vaccines prompt the body to generate an immune response that’s specifically tailored to the particular variant that the vaccine is designed to emulate.

source: express.co.uk