Depressing reports appeared this week claiming that, to quote the Telegraph headline, “Catching Omicron ‘does not protect you against future infection’”. (The story also appeared, without paywall, in the Mail.)
The claim is said to come from a new study from Imperial College which analysed immune system responses (note: not actual reinfection rates) in vaccinated healthcare workers with varying infection histories. Note that all the participants were triple-vaccinated, so no comparison is made with the unvaccinated.
Professor Danny Altmann, from Imperial’s Department of Immunology, was downbeat in his assessment of the findings.
The message is a little bleak. Omicron and its variants are great at breakthrough, but bad at inducing immunity, thus we get reinfections ad nauseam, and a badly depleted workforce. Not only can it break through vaccine defences, it looks to leave very few of the hallmarks we’d expect on the immune system – it’s more stealthy than previous variants and flies under the radar, so the immune system is unable to remember it.
According to the Telegraph report, Omicron infection does “virtually nothing against Omicron itself”.
They found that in people who were triple vaccinated and had no prior infection, an Omicron infection provided an immune boost against previous variants such as Alpha, Beta, Gamma, Delta and the original ancestral strain, but virtually nothing against Omicron itself.
People infected during the first wave of the pandemic and then again with Omicron also lacked any immune boosting, an effect the researchers have termed “hybrid immune damping”.
Is it true that the researchers found that an Omicron infection provided “virtually nothing” in the way of protection against Omicron re-infection? No, it is not. In fact, they found the opposite.
First of all, it’s worth saying they found that vaccination by itself (so with no infections) produced negligible immune responses against Omicron. The triple-vaccinated but never-infected, they write, “made no nAb IC50 response against B.1.1.529 (Omicron) 14 weeks after the third vaccine dose”, which indicates “rapid waning” of neutralising antibodies to zero. “nAb IC50” means the concentration of neutralising antibodies necessary to reduce viral infectivity by 50% and is a measure of antibody potency against a virus. The authors state that three doses of the vaccines provide “poor protection against transmission”.
As to the immune response induced by an Omicron infection, below is a chart showing their findings for N-type antibody binding against SARS-CoV-2, 14 weeks after a third vaccine dose.
Each dot represents the antibody level for one healthcare worker’s blood sample. The important thing to spot is that the black dots, which represent healthcare workers who were vaccinated and then infected for the first time with Omicron (B.1.1.529), are largely higher than the blue line, which is the baseline antibody level of someone who is uninfected (though, like all participants, triple-vaccinated). Clearly there is a boost in antibodies here, albeit highly varied (three points are very low). It is not much different to the antibody boost of those who were infected in the first wave (and then vaccinated), i.e., the red dots.
Notably, those who were infected in both the first wave and the Omicron wave (and vaccinated), shown in pink, have very high antibody levels; N.B. the chart uses a logarithmic scale and the pink dots are over a hundred times higher than the blue line (set at 1.0), whereas the red and black dots are mostly under 10 times higher than the blue line. This suggests that two infections give much stronger protection than one infection (at least in the vaccinated), and may indicate that herd immunity will improve significantly following second infections.
Note that N-antibodies are the antibodies that target the virus nucleocapsid (body), which is common to all variants, rather than the spike, which varies between variants. Thus on this point alone it is incorrect to say that Omicron infection does “virtually nothing against Omicron itself”. It provides a boost of N-antibodies, particularly when it is a second infection (at least following a Wuhan-strain infection, if not other variants). The authors themselves acknowledge this: “Infection during the B.1.1.529 (Omicron) wave produced potent cross-reactive antibody immunity against all [variants of concern], but less so against B.1.1.529 (Omicron) itself.” Less so, but certainly not nothing. Thus it is false to say, as per the Telegraph, that “people infected during the first wave of the pandemic and then again with Omicron also lacked any immune boosting”.
Against the spike protein, too, an Omicron infection provides an antibody boost. In the chart below, focus on the column on the far right, which shows the different IgG antibody levels against the Omicron spike protein for healthcare workers with different infection histories (the other columns show the IgG antibody levels against the spike protein of different variants).
The important thing to spot is that in the far-right column the black dots are considerably higher than the blue dots. The black dots represent healthcare workers who were infected for the first time in the Omicron wave (after being triple-vaccinated), and this shows they have considerably higher antibody levels against the Omicron spike protein than the blue dots, which represent never-infected (though vaccinated) healthcare workers. Thus again we see an antibody boost against Omicron from an Omicron infection, not “virtually nothing”.
Note that this time the pink dots are not higher than the blue dots. The pink dots, recall, are those who were infected during the first wave, then vaccinated, then infected again during the Omicron wave. We saw above that they had an N-type antibody level a hundred times higher than a never-infected person, and much higher even than someone infected once (whether with the Wuhan strain or Omicron) and vaccinated. Yet here they have a lower level of S-type antibodies against the Omicron spike protein. The authors explain that this is an example of “immune imprinting” (a.k.a. Original Antigenic Sin, OAS), whereby the original Wuhan infection inhibited the immune system’s ability to produce antibodies specific to the Omicron spike protein. Since immune imprinting is known to occur with the vaccines as well, it would be interesting to compare the antibody level of an unvaccinated (and not previously infected) person following Omicron infection, though the study does not do this.
Crucially, the very high N-type antibody levels suggest that the impairment from the immune imprinting of the Wuhan S-protein is amply compensated for elsewhere. This is a long way from “virtually nothing” against Omicron re-infection. Omicron provides natural immunity too. We are not doomed to keep on catching it forever.
Note that all of this concerns infection and re-infection. It doesn’t say anything about protection from serious disease and death, which is likely to be much more robust.
As a postscript, a neat study appeared recently in the NEJM which compared vaccine immunity to natural immunity in Israel (so the vaccine in question is Pfizer’s). The difference is stark, with natural immunity being far stronger and lasting far longer (note this is based on Delta infections, not Omicron). The chart below illustrates the massive difference between the double-dosed (and not previously infected) in orange and the previously infected (and not vaccinated) in blue.
The bars show the infection rate by time since last dose or infection. Notice how the orange bars increase in height quickly, reflecting fast-waning vaccine immunity. By contrast, at 4-6 months and 6-8 months the blue previously-infected bars are much lower, and even at 12 months-plus the bar is below even where the vaccinated were at 2-4 months, and the decline appears to have plateaued. Our immune systems still seem to be working.
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Hallelujah, there is a God up in heaven after all!
Yes there is a God.
His pappy – either Castro or Pierre – were both Communist tyrants (in different ways). Apples and trees.
Truck Fudeau. Totalitarian Rona fascist, a drama teacher, a guy who ran from the Freedom convoy pleading he was ill with the fake Rona, a corrupt grafter, open borders fanatic, queer tranny lover, anti-Catholic who presided over the destruction of 100 churches thanks to his fake news claims that ‘Residential schools’ murdered ‘Indians’.
In 8 years he deconstructed what was once a great nation.
You mean a corrupt grifter, obviously. There’s nothing graft about Trudeau.
National Holiday for Canada:
Trudeau Geau Day
One of the most vile neoliberal specimens. Worse than Macron, Milliband, Sarkozy. In the same rank as Blair and Ardern. Starmer is more of a mulfunctioning puppet. He stayed too late after the coach went home. I would imagine that in the future Trudeau will have more serious things to cry about. You can feel where things are going and so can he.
Surely MALfunctioning puppet, he is a walking disaster area?
Two dreadful Justin’s gone in one day yay
.
How 2TK must be quivering with fear over a revenge attack from the Donald ….. bring it on.
Justin time? Well done to Donald Trump for the steep sanctions threat against Justin’s Canada and for describing Justin as the ‘Governor’ of Canada – to be America’s 51st State. Hopefully Greenland will be 52nd.
I remember he ordered mounted policemen to ride over some disbaled woman. If you are capable of things like that then you have openly betrayed your own humanity. Like Jesus said, depart from me I never knew you.
Anyone who might do such a thing must be an awful and cowardly bully.
Isn’t that how Justin behaved during his 9 years in office?
Leave him alone in a bar with a few dozen of those Truck Drivers he tried to ruin…..no time limit and no repercussions.
Can we have a camera in there so we can watch?
Cue for the establishment to rally and bestow on him one of those ridiculous awards (a knighthood perhaps) for his service to world government during covid. Or perhaps he’ll be given a position in some globalist organisation. These scoundrels will do something to protect one of their own. Watch for it. It’s coming.
Nay, bloody hell Stewart, “scoundrel,” I think that’s a bit limp. Not the way I would refer to that genocidal maniac.
Tears of a clown.
Tears of a clown.
Whenever Canada is mentioned, I think of this man here: Polish Pastor Chases Cops Out of Church on Easter Weekend: ‘Get Out! You Nazis!’
If he runs to the WEF then I do so hope that the whole lot of them hang together.
Macron is the last of the lockdown fanatics still in power. I’m not sure if lockdown in France was more severe or longer than elsewhere but the restrictions on the unvaccinated were some of the harshest in the World as the things Macron said about the unvaccinated were among the worse things any leader said.
Good, but sadly 5 years too late for the Canadian people (the real ones, not the recent imports).
Still …. I expect Schwab will find a cosy “globalist” role for Mr Blackface.
The Government must call an election by October 2025. This fake resignation leaves Trudeau in power until the party chooses a new leader. He has also prorogued Parliament until the end of March thus preventing the house from voting on a non confidence vote he would lose triggering an election. So this fake resignation will leave Trudeau in power for many months during which he will feed his corrupt friends and globalist elite and fake charities billions more of Canada’s tax dollars. A word of advice NEVER elect a pathological NARCISSIST with a famous last name to power. The destruction he has caused in Canada is just unbelievable.
Strange, the approval rating looks like Starmer too!
Good riddance to Trudeau. As for Pierre Poilievre, I’ll reserve judgement on if he is a wunderkind depending on how much interest he takes in reversing the M.A.I.D. laws which are legally targeting the most vulnerable Canadians for state facilitated killing.
Astonishing. Justice at last for the courageous Canadian Freedom Convoy, which inspired so many others in the nations of the West.
But since he’s not actually clearing off until next autumn, there’s still plenty of time for him to wreak havoc.