[quote TheNighthawk]**@GoldenOmbre
95% reduction in symptomatic covid. They published their trial protocols, so we know what they were measuring.
But were they?
blogs.bmj.com/bmj/2020/11/26/peter-doshi-pfizer-and-modernas-95-effective-vaccines-lets-be-cautious-and-first-see-the-full-data/
but what population did they study? Age? Underlying conditions? Race? Sex? We don't know much.
Yes, we do. www.pfizer.com/news/press-release/press-release-detail/pfizer-and-biontech-conclude-phase-3-study-covid-19-vaccine "Approximately 42% of global participants and 30% of U.S. participants have racially and ethnically diverse backgrounds, and 41% of global and 45% of U.S. participants are 56-85 years of age."
Sorry, no, we don’t. Despite the inclusion of these groups none of the studies were powered to deduce benefit to them. Immunocompromised people and pregnant women were also excluded. The Pfizer trial has also only just been widened to include people with HIV and younger adolescents.
Astra Zeneca have been very cagey about their protocols until recently, and now we know a little more it seems to be a complete mess. They did swab their participants weekly, however (at least in the UK arm). The endpoints of all the trials was symptomatic covid, though the symptom selection as different for each. I do not know if swab results were known in the AstraZeneca trial. If so, this may clearly have influenced the perception of the endpoint in that subject, if positive.
This interesting paper from Prof Peter Piot summarises the current vaccine knowledge, together with lots of other interesting information, including the geopolitics of vaccine availability.
It also includes the point, more than once, that I have been trying to make:
The picture that emerges is that an approved vaccine will not be a silver bullet but simply a tool that is part of a broader set of measures that must continue to be deployed, such as the wearing of masks, good hand hygiene and social distancing –
Paper, Prof Peter Piot. Director, London School of Hygeine and Tropical Medicine
institute.global/policy/covid-19-vaccine-realism-good-news-and-bad-news
The point as also made by Eric Topol, Director of the Scripps Research Institute -
‘….we need to see the licencing of these vaccines for what it is: emergency use clearance in a pandemic which is killing hundreds of thousands and closing down economies around the world.’
This is why it makes my heart sink to see some of the responses here and in the papers. These vaccines will not mean normality again. They are just the start and simply part of an armoury. Those who feel thy can have a vaccine and fling caution to the wind are endangering us all.[/quote]
Who do you mean by all in last sentence? Not those who’ve had the vaccine?
But no SD won’t remain beyond hospitalisation issue as economic hit is too great.
Even phase 1 reduces deaths by 99%, we will move on.