2) From the start of the infection, our body will react with a certain number of lines of defense
3) In term of innate immunity, there are, before the interferons, the toll-like receptors (TLRs). To keep it simple, due to the complexity of this subject, we propose you a brief discovery with this video
4) It is these receptors which will trigger interferons and cytokines.
Interferons are a group of proteins, which work by inhibiting the replication of viruses and stimulating the immune system to mount a defense against the infection
5) Cytokines are a broad category of small proteins or peptides that are involved in cell signaling. They regulate various aspects of immune responses, including inflammation, cell growth, and cell differentiation.
6) We will return later to this important subject of the manipulation of interferons by SARS-COV-2.
In a defective immune response this leads to further accumulation of immune cells, causing overproduction of pro-inflammatory cytokines, a "cytokine storm" ..
7) ... which damages the lung infrastructure and circulates to other organs, leading to multi-organ damage. COVID-19 is a multisystem inflammatory disease.
8) Finally, there is what we call the adaptive immunity, composed of humoral and cell-mediated immunity.
9) It is thanks to these adaptive immunity mechanisms that for example the CD4+ T-cells helpers or the antibodies will be produced.
10) In conclusion, for those interested, we had already posted a thread for kids.
"COVID-19 epidemic dynamics are driven by a complex interplay of factors including population behaviour, government interventions, new variants, vaccination campaigns and immunity from prior infections" medrxiv.org/content/10.110β¦
2) ABSTRACT
"We found SARS-CoV-2 transmission dynamics in the Dominican Republic were driven by substantial accumulation of immunity during the first two years of the pandemic but that, despite this, vaccination was essential in enabling a return to pre-pandemic mobility levels
3) ... without incurring considerable additional morbidity and mortality."
What if SARS-COV-2 MANIPULATED the AUTOPHAGIC mechanism, to INFECT us BETTER ? (mega-thread)
(credit Autophagy journal)
2) SUMMARY (layman)
Autophagy is a cellular process that involves the degradation and recycling of cellular components. It plays an important role in maintaining cellular homeostasis.