3 ms·

It also assumes, contrary to gathered data, that immunity lasts more than 3 months. There are now several studies that point to a short-lived immunity after fi

It also assumes, contrary to gathered data, that immunity lasts more than 3 months. There are now several studies that point to a short-lived immunity after fighting off this virus. So far, the community of virologists and immunologists are warning that there will be a 2nd wave, possibly a 3rd and 4th wave as well, of this virus. The reasons are manifold and not at-all to do with governmental response. No matter a government's response this is a novel virus, hey whaddoyaknow that's even what we're calling it, and it acts in manners that other viruses do not. Human bodies react to this virus differently than they do to other viruses. To claim that governments are to blame is being disingenuous at best, and an outright lie at the worst.

maverick2007 6y ago
In case anyone reading this is like me and hadn't heard the 3 month immunity window news, here's an Ars article that does a pretty good job summarizing what it is and what it means: https://arstechnica.com/science/2020/06/immunity-to-covid-19-may-wane-just-2-3-months-after-infection-study-suggests/ https://arstechnica.com/science/2020/06/immunity-to-covid-19...
- lambdadmitry 6y ago
  Trouble is the article misses a very important point: that's just antibody (B-cell mediated) immunity. There is also T-cell immunity, which is harder to quantify so it doesn't get much attention, but we can be quite sure that it plays important role because many people who recovered from COVID don't develop effective neutralising antibodies at all. To recover from a disease like this you have to develop an effective immune response, so if it's not antibodies, it has to be T-cell immunity. Moreover, even for antibody immunity it's not the whole story, because it's normal and expected for antibody count to decline with time — we have memory cells that ensure rapid production of the relevant antibody when the same antigene is presented. It's basically the case of paying attention to something we can measure just because we can measure it.

maverick2007 6y ago

In case anyone reading this is like me and hadn't heard the 3 month immunity window news, here's an Ars article that does a pretty good job summarizing what it is and what it means: https://arstechnica.com/science/2020/06/immunity-to-covid-19-may-wane-just-2-3-months-after-infection-study-suggests/ https://arstechnica.com/science/2020/06/immunity-to-covid-19...

lambdadmitry 6y ago
Trouble is the article misses a very important point: that's just antibody (B-cell mediated) immunity. There is also T-cell immunity, which is harder to quantify so it doesn't get much attention, but we can be quite sure that it plays important role because many people who recovered from COVID don't develop effective neutralising antibodies at all. To recover from a disease like this you have to develop an effective immune response, so if it's not antibodies, it has to be T-cell immunity. Moreover, even for antibody immunity it's not the whole story, because it's normal and expected for antibody count to decline with time — we have memory cells that ensure rapid production of the relevant antibody when the same antigene is presented. It's basically the case of paying attention to something we can measure just because we can measure it.