Talk of The Villages Florida - View Single Post - How is vaccine efficacy determined?
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Old 11-22-2020, 09:33 PM
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Originally Posted by Raywatkins View Post
Not sure about the 2 vaccines mentioned in the thread, but a friend of mine here in the UK is participating in the Oxford/Astra Zeneca trial.
He had blood taken before the first injection along with nasal and throat swabs.
He has had to provide swabs each week.
Before second jab he had to give blood again.
He will give a further blood sample before he completes the trial. (He may have done that now as I haven’t seen him for a few weeks due to the national lockdown here in UK.)
There is ongoing study to see how long protection lasts.
This trial either uses the real vaccine or the one for measles as the placebo.
They apparently look for antibodies in the blood.
Hope that helps.
The Astra Zeneca vaccine is not mRNA. The study being done in UK is a different protocol. They are in phase 3 immunizing volunteers with either the Covid test vaccine or a saline vaccine, not measles. They are following the groups by measuring anti-Covid antibodies, T cell immunity, as well as PCR test positive symptomatic illnesses
The protocol is HERE

There are to be 30,000 subjects in this study, 20K will receive the active vaccine and 10K the placebo.
In earlier phase testing they did not use a saline placebo, instead they used a meningococcal vaccine placebo. Those results are HERE Your relative may have been a participant in this earlier phase testing.