The main reason we're holding off meeting (once legal) is that our parents are vulnerable.
They've just had their first jab, but likely won't get their second for a month or so at least.
I know there are some really intelligent people on here who are well up on the vaccine facts, can anyone share a link to studies that show the efficacy of the first dose over time? |
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The answer depends on which vaccine you had, there is data on both.
Sadly cannot provide links to academic material, but for the Pfizer-BioNTech vaccine, if you search "REACT-2 Round 5: increasing prevalence of SARS-CoV-2 antibodies demonstrate impact of the second wave and of vaccine roll-out in England" you will find a pre print from Imperial College on antibody prevalence in different age groups after the Pfizer-BioNTech vaccine.
For Oxford-AstraZeneca, if you search for "Single Dose Administration, And The Influence Of The Timing Of The Booster Dose On Immunogenicity and Efficacy Of ChAdOx1 nCoV-19 (AZD1222) Vaccine" you will find a pre-print about efficacy of the Oxford vaccine over a period of up to 90 days as a single dose.
These are both pre-prints. I am not aware of fully peer reviewed material that covers the specific question of efficacy of a single dose over time. |
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Cool, thanks.
From what I'd seen, nothing seemed nailed down on either of the two main jabs. I wasn't sure if I was just searching the wrong question, but it does seem as if there's no firm data still.
We've waited this long. I think we can hold until they've had their second and give it a bit of time to get up and running. |
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The numbers vary but both the AZ and Pfizer vaccine offer good protection after the first jab, but even better protection after the second. I wouldn’t risk anything until they have had a second jab, which will be in 11 to 12 weeks time. |
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By (user no longer on site)
over a year ago
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New data from large scale study in USA. AZ single dose
Cuts infection by 70%
Death from Covid by 100% (personally think that seems a bit too good to be true? .... but hey!)
Transmission by 67% (great news)
Was on most news channels last night. |
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By (user no longer on site)
over a year ago
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"The main reason we're holding off meeting (once legal) is that our parents are vulnerable.
They've just had their first jab, but likely won't get their second for a month or so at least.
I know there are some really intelligent people on here who are well up on the vaccine facts, can anyone share a link to studies that show the efficacy of the first dose over time? "
The WHO and manufacturers guidance for the second jab is that it should happen around 21 days after the first. The UK government are working on a 12 week wait before the second jab policy. The effectiveness/impact of this delay has not been assessed
On a personal level, I’m going to wait until I’ve had my second jab and the R1 is very low before I even think about any return to a normal life, amd then I may think about starting to meet.
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