2021.8.4, 9.15: health/immunity/covid-19/
T cells can reveal a covid infection even if antibodies waned
9.15: summary:
. if you had a mild case of covid,
or it has been a while since you've been infected,
your antibody levels may be too low to measure,
but your T cells can still be measured
to determine if you've been exposed to covid virus.
. the CDC says you should get the vaccine
even if you have been infected,
so what's the use in knowing your status?
. you may be less likely to get sick again
if the vaccine doesn't cover some variants,
but the infection does cover the variants.
. you may want reassurance after vaccination
that even if the vaccine doesn't work on your variant,
you might still be protected by your infection.
. if you believe that, the CDC reminds you,
there are significant risks to getting infected;
not just death but also strange chronic illness;
so it's safer to get vaccinated than infected.
. even for children who are prone to having
bad reactions to the vaccine,
there are even more reactions to the virus.
. without any early treatment options available
(whether by politics or science)
there will be many more deaths from virus
than there will be deaths from vaccine.