Boosters

That's only 2 weeks after the 2nd dose, by 8-9months its somewhere between 16 - 39% effective, so there will be a lot more vaccinated people sick with covid, than the 93% efficacy number would suggest.

Your entire post is invalidated by reading to the linked paper from the twitter post:

Six-Month Effectiveness of BNT162B2 mRNA COVID-19 Vaccine in a Large US Integrated Health System: A Retrospective Cohort Study by Sara Y. Tartof, Jeff M. Slezak, Heidi Fischer, Vennis Hong, Bradley K. Ackerson, Omesh N. Ranasinghe, Timothy B. Frankland, Oluwaseye A. Ogun, Joann M. Zamparo, Sharon Gray, Srinivas R. Valluri, Kaijie Pan, Frederick J. Angulo, Luis Jodar, John M. McLaughlin :: SSRN

Here's another:

Effectiveness of COVID-19 Vaccines in Preventing SARS-CoV-2 Infection Among Frontline Workers Before and During B.1.617.2 (Delta) Variant Predominance — Eight U.S. Locations, December 2020–August 2021 | MMWR (cdc.gov)

I would advise to read the conclusions and then the numbers to understand what the data means rather than reading the data and trying to draw your own conclusions.

The 93% does not relate only to the CHR, it's the combination of the lowered risk of becoming a case and the lowered risk of then becoming hospitalised.

edit: in the following infographic, it's 80% efficacy against infection and 70% additional efficacy against hospitalisation, so 1-(0.2x0.3) = 94%.

Apologies, I was referring to efficacy against infection, not hospitalization. Sources for the efficacy against infection are below.

www.ft.com/content/23cdbf8c-b5ef-4596-bb46-f510606ab556

"By August, according to the health ministry, studies showed the Pfizer vaccine’s efficacy against infection falling to 39 per cent, and to as low as 16 per cent for people who had their second shots in January"

www.timesofisrael.com/israeli-uk-data-offer-mixed-signals-on-vaccines-potency-against-delta-strain/

"The Israeli statistics also appeared to paint a picture of protection that gets weaker as months pass after vaccination, due to fading immunity. People vaccinated in January were said to have just 16% protection against infection now, while in those vaccinated in April, effectiveness was at 75%"

www.cnbc.com/2021/07/23/delta-variant-pfizer-covid-vaccine-39percent-effective-in-israel-prevents-severe-illness.html

Pfizer and BioNTech’s Covid-19 vaccine is just 39% effective in Israel where the delta variant is the dominant strain, according to a new report from the country’s Health Ministry.

I just did, 20 for un vax (based on 2% hospitalisation rate) and about 2 for vaxxed (93% efficacy), but your question makes no sense and doesn't apply in the real world.

And again, I gave you the answer already and you didn't even recognize it was being given.

And be polite to those giving you the answers, you're on here demanding answers to simple maths problems as if there's some cover up over the effectiveness of vaccines, which is a conclusion you won't be able to reach.

Here is new one one for your collection from Qatar

But it's not, you're completely wrong, and you've just gone and done what I said you would do, which is to take figures and extrapolate them into something nonsensical. You're completely missing all the variables that is in the charts within the studies that you refuse to read.

You can't make further conclusions out of a simplified question to try and suit your narrative.

Laugh all you like, that's all based on the data posted here to explain it to you.

Plenty of elderly 84 year olds have contracted covid and have not needed hospital care. The vaccines reduce that rate down even further.

Ok, just starting to look at the first few, this looks like another deliberate attempt to misconstrue valid research and misrepresent results.

• mask wearing during dialysis has nothing to do with general mask mandates and mask efficiency
• face shield efficiency is not the same as mask efficiency, we had consistent recommendations against face shields from the start, because they are ineffective
• outside masking was never recommended by any scientists here in Europe, there never have been outside mask mandates, so stating that masks are inefficient in outdoor use is old news, and distracts from where it is efficient
• mask wearing during sports outdoors - no scientist in Europe ever claimed this to be a thing, and, again, no outdoor mask mandates, because they make no sense
• when a study says 'further research is needed' that's not a conclusion that masks are ineffective
• pre-Covid studies do not have any significance for mask effectiveness for Covid
• studies for illnesses that have fundamentally different mechanisms for infection, like influenza, are not relevant for Covid and masking
• masks for health care personnel in hospital has nothing whatsoever to do with Covid prevention for the general population
• some of the studies from the earliest day still list fomite transmission as a way to get infected, meaning it's based on flawed understanding of transmission
• "N95 Respirators vs Medical Masks for Preventing Influenza Among Health Care Personnel" -from 2019 - perfect example of an attempt do deliberately obfuscate and mislead
• "Effectiveness of N95 respirators versus surgical masks in protecting health care workers from acute respiratory infection: a systematic review and meta-analysis" from 2016 - perfect example of an attempt do deliberately obfuscate and mislead
• "The use of masks and respirators to prevent transmission of influenza: a systematic review of the scientific evidence" from 2011 - perfect example of an attempt do deliberately obfuscate and mislead
• "Use of surgical face masks to reduce the incidence of the common cold among health care workers in Japan: a randomized controlled trial" from 2009. Common cold. Seriously.
• "A cluster randomised trial of cloth masks compared with medical masks in healthcare workers" - from 2015 - because, you know, using cloth masks instead of medical masks during brain surgery sounds like a really good, reasonable idea.
• "Postoperative wound infections and surgical face masks: A controlled study" -1991 - hey, how about the mask like collars that your dog gets after surgery? Link to any studies of that? Because, it proves that indoor masking is inefficient for SARS-COV-2 transmission?

Deliberately misrepresenting valid science to feed conspiracy narratives has become an increasingly common tactic.