Cellular (T-cell) immunity against the virus that causes Covid-19 is likely to be present within most adults six months after primary infection, with levels considerably higher in patients with symptoms, a study suggests.
The data offers another piece of the puzzle that could be key to understanding whether previous Sars-CoV-2 infections – the virus behind Covid-19 – can prevent reinfection, and if so, for how long.
The study, led by the UK coronavirus immunology consortium, evaluated 100 non-hospitalised healthcare workers in March and April after antibody responses were detected in them. It is yet to be peer-reviewed.
It is the first study to offer data on T-cell levels six months after infection in people with mild or asymptomatic disease that is likely to represent the majority of infections, the authors say.
Hi 2greys, at last some positive news, let’s just hope the T-Cells last as long as the Sars 1 virus, they are still present in patients now after 17 years and have also protected people from getting Covid-19. Dr John Campbell mentions it quite often in his YouTube videos.
This has been my view as well, I have read the same results of studies as Dr John, I have read other studies, as no doubt, he has as well.
I will say this again, in my view of the evidence, B-cells and T-cells are of much greater importance than the initial antibodies are. So what if antibodies declining after time, it is not a great loss, more antibodies will be made 'on demand as needed'.
Very simply put, it is the protein surrounding the virus with SARS-COV-1 is virtually identical to SARS-COV-2. It is this protein that the body uses to produce the respondent B-cells and both helper and killerT-cells. It is also this the same protein that gets dissolved by soap, thus killing the virus.
As you rightly say, the B-cells and T-cells have given immunity to SARS-COV-1 from the time since it first surfaced 17 years ago and still gives active immunity today.
This claim is not bing born out in the public though.
I know of several that caught it early on and have no immunity 6 months on when tested. I would suggest all of these reports are taken for what they are, interim results that have not even been peer reviewed, 6% in the larger study is a minimal amount and 10 times less than the so called 'herd immunity'.
Also "this does not yet prove immunity to further infections which will require longer-term surveillance and larger cohorts.”"
You are entitled to your own opinion. There will always be a doubting Thomas.
"I know of several that caught it early on and have no immunity 6 months on when tested".
The only immunity that can be tested for is a serology, antibodytest. Not for B-cells and T-cells which is the subject matter. Testing for B-cells and T-cells is something that is not routine at all, it is very complicated, requires a full blood sample and takes a long time to perform, hence very expensive.
As a personal case in point. My partner is a senior carer in a nursing home, That nursing home like most of the other residential and nursing homes were rife with the virus back in April. My partner was infected who consequently passed it on to myself, 4 days later. She has since, tested positive with an antibody test as part of the plasma donation scheme, ergo that proves she had been infected and by inference so was I. She continued to work at the nursing home after a 14 day isolation period (the regulation 10 days from myself presenting the symptoms). Neither of us have suffered re-infection again since April. There were elderly residents who recovered from the virus as well, none of them have suffered re-infection. The nursing home has only been Covid free for 3 weeks since April, that includes all the staff.
Perhaps you can get your grey matter around the facts within this link, which is more than you have provided to back your claim, which in fact has nothing to do with B-cells or T-cells and off topic:
I have more links that are a lot more technical to task your grey matter with, if you like. Understand that the newspaper article is written for the general public, who are not medical students, to comprehend.
I entirely agree with your observations, especially after reading this article. Covid-19 or Sars-Cov-2 does mutate and therefore reinfection with another strain is possible. It is too early to make definitive statements one way or the other just yet.
I will just throw this into the mix. If there is no longevity with antibodies then unless B-cells and T-cells give protection over a longer period of time, a vaccine is going to be of no real use at all. The logistics of providing a booster shot every few months after it's effectiveness wears off is not going to happen, it will be like painting the Forth Bridge, get to the end and have to start all over again.
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