The immune system of 40-60% of the unexposed recognizes and reacts to the SARS-CoV-2 coronavirus

[yuyiinthesky]

The immune system of 40-60% of the unexposed recognizes and reacts to the SARS-CoV-2 coronavirus due to earlier 'common cold' exposure!

 

No, it is not me who claims that, but it is from the summary of a fresh Journal Pre-proof for Elsevier to appear in "Cell". 

Established virologists such as Prof Drosten have already been heard talking that there seems to be a kind of base immunity against the SARS-CoV-2 Virus, and values such as 25% had been mentioned. 

This fresh (accepted May 7) Journal Pre-proof is about "Targets of T cell responses to SARS-CoV-2 coronavirus in humans with COVID-19 disease and unexposed individuals".

One of the key findings is in the last paragraph of the Summary:

 

Quote

Importantly, we detected SARS-CoV-2−reactive CD4+ T cells in ~40-60% of unexposed individuals, suggesting cross-reactive T cell recognition between circulating ‘common cold’ coronaviruses and SARS-CoV-2.

Now that's what I call really good news!

It probably explains why the positive case values go down already very long before the expected herd immunity level of 50-70% is reached, such as in Sweden, where we seem to see the plateau and the reduction already now.

And it seems to explain also why some get infected and so many not, why even the careful models trying to predict the development of the pandemic where not reached.

Source: https://www.cell.com/cell/pdf/S0092-8674(20)30610-3.pdf

And no, don't even try to blame this on conspiracy or whatever, just be happy about the good news!

Edited May 16, 2020 by yuyiinthesky

[Puccini]

This is very interesting news, indeed. Thank you for posting the link to the preprint article.

[ukrules]

I read something about this earlier and it does look promising.