Originally posted by Bryn
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Coronavirus
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For those who might be worried about receiving the AZ vaccine, the WHO has published new guidelines on its use which endorse the UK government’s approach. They confirm that delaying the administration of the second jab gives a stronger response and are now recommending an 8 to 12 week gap between jabs for the AZ vaccine, as the longer gap is "associated with greater vaccine efficacy” and will also allow more people to be protected quickly. They also confirm it is recommended for all groups, including the over 65s.
"I do not approve of anything that tampers with natural ignorance. Ignorance is like a delicate exotic fruit; touch it and the bloom is gone. The whole theory of modern education is radically unsound. Fortunately in England, at any rate, education produces no effect whatsoever. If it did, it would prove a serious danger to the upper classes, and probably lead to acts of violence in Grosvenor Square."
Lady Bracknell The importance of Being Earnest
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Originally posted by LHC View PostFor those who might be worried about receiving the AZ vaccine, the WHO has published new guidelines on its use which endorse the UK government’s approach. They confirm that delaying the administration of the second jab gives a stronger response and are now recommending an 8 to 12 week gap between jabs for the AZ vaccine, as the longer gap is "associated with greater vaccine efficacy” and will also allow more people to be protected quickly. They also confirm it is recommended for all groups, including the over 65s.
https://www.who.int/publications/i/i...ZD1222-2021.1/
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Originally posted by Serial_Apologist View PostBut not the Pfizer, evidently...
UK monitoring thus far suggests that delaying the Pfizer vaccine 2nd jab should have similar outcomes as for the AZ vaccine. The only reason this wasn’t provided for before was that Pfizer didn’t include this level of delay in its clinical trials, and so there was no evidence for or against a delay. There will be soon."I do not approve of anything that tampers with natural ignorance. Ignorance is like a delicate exotic fruit; touch it and the bloom is gone. The whole theory of modern education is radically unsound. Fortunately in England, at any rate, education produces no effect whatsoever. If it did, it would prove a serious danger to the upper classes, and probably lead to acts of violence in Grosvenor Square."
Lady Bracknell The importance of Being Earnest
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Originally posted by LHC View PostThere is a report in the Sun (I know, I’m sorry) that monitoring of the vaccinations given so far in the UK shows the Pfizer vaccine provides 65% protection after 1 jab, rising to 85% after two, and that figures for AZ are virtually identical (this is not surprising in that the vaccines are both designed to promote an specific immune response to the spike protein).
UK monitoring thus far suggests that delaying the Pfizer vaccine 2nd jab should have similar outcomes as for the AZ vaccine. The only reason this wasn’t provided for before was that Pfizer didn’t include this level of delay in its clinical trials, and so there was no evidence for or against a delay. There will be soon.
To baldly say that the Pfizer vaccine provides 65% after 1 jab is meaningless and potentially misleading.
The Phase 3 trial data indicated that the first dose of the Pfizer vaccine had a 90% efficacy from 15 days after the jab. (The data was only available for days 15 to 21, but the data between days 15 and 28, before the second jab took effect, was similar). The overall efficacy between the 1st and 2nd jab was something like 50%, but that obviously included the first two weeks, before the vaccine took effect.
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Originally posted by johnb View PostI feel steam coming out of my ears when I read this type of reporting (I found a Sun online article that quoted those figures.
To baldly say that the Pfizer vaccine provides 65% after 1 jab is meaningless and potentially misleading.
The Phase 3 trial data indicated that the first dose of the Pfizer vaccine had a 90% efficacy from 15 days after the jab. (The data was only available for days 15 to 21, but the data between days 15 and 28, before the second jab took effect, was similar). The overall efficacy between the 1st and 2nd jab was something like 50%, but that obviously included the first two weeks, before the vaccine took effect.
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It would help if mainstream media reports of these matters would define their terms properly. Or at all.
What actually *are* "efficacy" and "protection" in the context of each study?
I think it generally means - a) reduction in probability of symptomatic infection per challenge, all things being equal. That's not the same thing as b) the reduction in risk of serious illness or death - which has to be at least as great and probably rather greater.
It appears that only a) is knowable at the moment with b) being something that can only be ascertained over time. Can it really be so hard to communicate this distinction clearly for general consumption?
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Originally posted by Simon B View PostIt would help if mainstream media reports of these matters would define their terms properly. Or at all.
What actually *are* "efficacy" and "protection" in the context of each study?
I think it generally means - a) reduction in probability of symptomatic infection per challenge, all things being equal. That's not the same thing as b) the reduction in risk of serious illness or death - which has to be at least as great and probably rather greater.
It appears that only a) is knowable at the moment with b) being something that can only be ascertained over time. Can it really be so hard to communicate this distinction clearly for general consumption?
The Guardian's energy journalist doesn't understand how the National Grid works, so makes some real clangers when talking about renewable energy generation. I have complained 3 times and had no response so it evidently isn't considered that important - so what hope the the Sun - especially given its 'special ' relationship with the truth?
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Originally posted by Simon B View PostIt would help if mainstream media reports of these matters would define their terms properly. Or at all.
What actually *are* "efficacy" and "protection" in the context of each study?
I think it generally means - a) reduction in probability of symptomatic infection per challenge, all things being equal. That's not the same thing as b) the reduction in risk of serious illness or death - which has to be at least as great and probably rather greater.
It appears that only a) is knowable at the moment with b) being something that can only be ascertained over time. Can it really be so hard to communicate this distinction clearly for general consumption?
'Efficacy' has three too many syllables for the majority of readers of main-stream and social media.Fewer Smart things. More smart people.
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Originally posted by DracoM View PostAnother somewhat disturbing stat from my part of the nation:
• The 55-64 age group accounted for the greatest number of new cases in this area followed closely by the 25-34, 45-54 and 35-44 age groups;
• There were decreases in new cases in all age groups here from the previous week.
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I'm not sure if this is the right thread for inroducing this, but is anyone else disturbed at the apparent tendency of scientific spokespersons to anthropomorphise viruses? What we seem to be hearing about is ability to "choose" adaptability for purposes of survival. This morning one virologist, in response to a caller asking if more dangerous strains of Covid might emerge in the future, stated that there would be no "purpose" in the Coronavirus evolving new and more dangerous strains if the purpose is survival, since more people would die and thereby not be available for infection, thereby negating the whole point!
I may have got into a semantic trap here, but I thought only humans had purposes since these involved conscious decision-making, and that species diversification arose spontaneously, not because the species in question consciously wanted to survive. Wouldn't imputing purpose to micro-organisms imply some higher innate intelligence beyond the imperative to survive against evolutionary odds?
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Originally posted by Serial_Apologist View PostI'm not sure if this is the right thread for inroducing this, but is anyone else disturbed at the apparent tendency of scientific spokespersons to anthropomorphise viruses? What we seem to be hearing about is ability to "choose" adaptability for purposes of survival. This morning one virologist, in response to a caller asking if more dangerous strains of Covid might emerge in the future, stated that there would be no "purpose" in the Coronavirus evolving new and more dangerous strains if the purpose is survival, since more people would die and thereby not be available for infection, thereby negating the whole point!
I may have got into a semantic trap here, but I thought only humans had purposes since these involved conscious decision-making, and that species diversification arose spontaneously, not because the species in question consciously wanted to survive. Wouldn't imputing purpose to micro-organisms imply some higher innate intelligence beyond the imperative to survive against evolutionary odds?
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Originally posted by Serial_Apologist View PostI'm not sure if this is the right thread for inroducing this, but is anyone else disturbed at the apparent tendency of scientific spokespersons to anthropomorphise viruses? What we seem to be hearing about is ability to "choose" adaptability for purposes of survival. This morning one virologist, in response to a caller asking if more dangerous strains of Covid might emerge in the future, stated that there would be no "purpose" in the Coronavirus evolving new and more dangerous strains if the purpose is survival, since more people would die and thereby not be available for infection, thereby negating the whole point!
I may have got into a semantic trap here, but I thought only humans had purposes since these involved conscious decision-making, and that species diversification arose spontaneously, not because the species in question consciously wanted to survive. Wouldn't imputing purpose to micro-organisms imply some higher innate intelligence beyond the imperative to survive against evolutionary odds?
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