Immunity in Covid-19

Maybe you could answer a question: if we know antibodies, once acquired, gradually diminish over time, but T cells retain memory, so when they next encounter a virus they jump to it and divide/multiply to form clone cells which rapidly pump out huge volumes of the required antibody......so... Why is China and offical science having a massive flap attack about covid 19 circulating antibodies starting to diminish after 3 months...Isnt that perfectly normal???? Isnt that what always happens??

I think they've found that B and T type memory cells wane over time with other coronavirus.

There is no such thing as B and T type memory cells.

We are asking if B cells (produce antibodies) and T cells (roaming killer soldier cells) have memory.





Two situations

1/ weak adaptative AB level in blood because of strong natural and T cell response
Usually mild or a symptomatic cases
2/ strong initial AB response and even more in severe covid could be followed by immune depression because of altered metabolism poor nutrition and generally speaking poor health in those patients.