Coronavirus (COVID-19) Discussion Thread

[JRPGfan]

haxxiy said:

A study published today in Nature shows T-cell activation is present in all individuals even seventeen years after SARS-CoV infection.

It seems increasingly doubtful people will need more than one shot of the vaccine or one infection, even after sterilizing immunity is gone after a year or so (which some people naïvely confound with immunity as a whole as evidenced... here and there).

Then it'll just be another common cold if it's still symptomatic at all (which maybe it won't be, since cellular immune cross-reaction to other coronaviruses seem to be able to effectively purge SARS-CoV-2 with mild to no symptoms already).

Edit - as a side note, I'm convinced there must be some reaaally massive immune cross reaction with other or others, as of yet unidentified, betacoronavirus(es) in eastern and specially southeastern Asia. Cultural differences and mask wearing in no way can be responsible for the difference force of infection we're seeing between various places in the world, given the H1N1 experience.

Not sure about any of the T-cell stuff.... but I've read that Antibody levels peak about 3weeks-1month after infection, and slowly drop off.
Usually within 3-4 months the anti body levels are so low, you arn't really protected anymore.

Also theres stories of people getting reinfected.
Not just the false positives, retested and found because of a faulty test picking up on dead virus cells in the blood stream.

Actual 2nd time infections (so far it appears rare) however its possible to get coronavirus a 2nd time.
Also the in one case, the person that got the 2nd time, had it worse than the first time they got sick.

This kinda goes against what your saying, about 17 years of immunity and whatnot.