godisney14
DIS Veteran
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- Aug 3, 2019
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https://www.statnews.com/2020/08/24...tion-documented-in-hong-kong-researchers-say/
So...this is interesting.
First time around, the patient had mild symptoms, similar to a regular cold. Second time, he was asymptomatic.
It's just one documented case, so it's hard to make any conclusions.
What it sounds to me is that this is similar to when people get reinfected by non-Covid-19 coronaviruses. The T-cell recognizes the virus into recruiting B cells and production of antibodies. The innate immune response is not needed to ramp up and cause symptoms--unless you are immunocompromised.
This also probably means that the patient was likely highly infectious even in the second time around while asymptomatic.
ETA:
Apparently, the patient had no meaningful detectable levels of antibodies after some time after the first infection. This was widely known to be possible from all the studies so far from around the world that showed decreasing levels of antibodies for those with mild/no symptoms. But, this patient did develop antibodies after the re-infection.
What this observation points to is that herd immunity is not a viable approach. (Not that it ever was).
So...this is interesting.
First time around, the patient had mild symptoms, similar to a regular cold. Second time, he was asymptomatic.
It's just one documented case, so it's hard to make any conclusions.
What it sounds to me is that this is similar to when people get reinfected by non-Covid-19 coronaviruses. The T-cell recognizes the virus into recruiting B cells and production of antibodies. The innate immune response is not needed to ramp up and cause symptoms--unless you are immunocompromised.
This also probably means that the patient was likely highly infectious even in the second time around while asymptomatic.
ETA:
Apparently, the patient had no meaningful detectable levels of antibodies after some time after the first infection. This was widely known to be possible from all the studies so far from around the world that showed decreasing levels of antibodies for those with mild/no symptoms. But, this patient did develop antibodies after the re-infection.
What this observation points to is that herd immunity is not a viable approach. (Not that it ever was).
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