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NIH RESEARCH MATTERS
March 8, 2022
COVID-19 immune response improves for months after
vaccination
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At a Glance
Researchers showed that B cells evolve after COVID-1
vaccination to help improve
protection against SARS-CoV-2 over time:
A better understanding of how the immune system responds to COVID-19 vaccination
could lead to more effective and longer-lasting vaccination strategies:
Vaccines are the best way to protect yourself
against COVID-19. They elicit
strong defense
against SARS-CoV-2, the virus that causes the
disease. Vaccines activate your body's disease
defense
system, called the immune
The
response starts by engaging two kinds of immune
cells: B cells, which produce antibodies that fight
off the virus,
and T cells, which destroy infected
cells.
After this initial response, levels of antibodies in
the bloodstream begin to fall. But some B and T
Antibodies are the immune system's first line of
cells stay around to keep a "memory" of the virus
defense agalnst viruses Iike SARS-CoV-2,
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