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CDC Science Brief: COVID-19 Vaccines and Vaccination
Center for Disease Control ^ | 09/15/2021 | CDC

Posted on 10/13/2021 11:24:17 PM PDT by Brian Griffin

Vaccine efficacy refers to how well a vaccine performs in a carefully controlled clinical trial, and effectiveness describes its performance in real-world observational studies. Evidence demonstrates that the approved or authorized COVID-19 vaccines are both efficacious and effective against symptomatic, laboratory-confirmed COVID-19, including severe forms of the disease. In addition, as shown below, a growing body of evidence suggests that COVID-19 vaccines also reduce asymptomatic infection and transmission.

Rhesus macaque challenge studies provided the first evidence of the potential protective effects of Pfizer-BioNTech, Moderna, and Janssen COVID-19 vaccines against SARS-CoV-2 infection, including both symptomatic and asymptomatic infection. Vaccinated macaques developed neutralizing antibodies that exceeded those in human convalescent sera and showed no or minimal signs of clinical disease after SARS-CoV-2 challenge. In addition, COVID-19 vaccination prevented or limited viral replication in the upper and lower respiratory tracts, which may have implications for transmission of the virus among humans

There is now a substantial volume of scientific literature examining the effectiveness of COVID-19 vaccination against SARS-CoV-2 infection, symptomatic disease, and other clinical outcomes; detailed summaries of these studies are available in the International Vaccine Access Center’s VIEW-Hub resource library[https://view-hub.org/resources].

Studies from the United Kingdom have noted effectiveness of the Pfizer-BioNTech vaccine against confirmed infection (79%) and symptomatic infection (88%)

Notably, in the United Kingdom, Canada, Qatar, South Africa, and Israel, vaccine effectiveness against hospitalization related to Delta was >90%

The United Kingdom and Canada used prolonged intervals of 12–16 weeks between vaccine doses, which have been observed to induce higher immunogenicity and effectiveness.

Table 1a. Effectiveness of COVID-19 Vaccination Against SARS-CoV-2 Infection and Symptomatic Disease (Including Severe Disease and Hospitalization) Caused by the Delta Variant

United States Healthcare workers, first responders, and other essential and frontline workers Pfizer-BioNTech, Moderna, or Janssen SARS-CoV-2 infection 66%(26%-84%)

United States Health system members ≥12 years Pfizer-BioNTech SARS-CoV-2 infection 75%(71%-78%) Hospitalization 93%(84%-96%)

In addition to preventing morbidity and mortality associated with COVID-19, currently approved or authorized vaccines also demonstrate effectiveness against asymptomatic SARS-CoV-2 infection....

Table 1b. Effectiveness of COVID-19 Vaccination Against Asymptomatic SARS-CoV-2 Infection When Different Variants Predominated

Qatar General population ≥12 years Moderna Delta 80%(54%-93%) Pfizer-BioNTech Delta 36%(11%-54%)

Two studies have observed poor antibody response to the Pfizer-BioNTech vaccine among nursing home residents compared with staff ; one study noted 38% of nursing home residents had undetectable antibodies to the Beta variant at 2–4 weeks after the second dose of Pfizer-BioNTech vaccine, compared with 12% with Moderna vaccine. Another study showed declining antibody levels among nursing home residents, with 72% of residents having undetectable neutralizing antibody levels at 6 months post-vaccination with Pfizer-BioNTech.

A study of U.S. long-term care residents, who were among the first groups in the United States to be vaccinated, found effectiveness of mRNA vaccination against infection declined from 75% in March–May 2021 to 53% in June–July 2021.

For the Delta variant, early data indicate vaccinated and unvaccinated persons infected with Delta have similar levels of viral RNA and culturable virus detected, indicating that some vaccinated people infected with the Delta variant of SARS-CoV-2 may be able to transmit the virus to others. However, other studies have shown a more rapid decline in viral RNA and culturable virus in fully vaccinated people. One study observed that Delta infection in fully vaccinated persons was associated with significantly less transmission to contacts than persons who were unvaccinated or partially vaccinated.


TOPICS: Health/Medicine; Reference; Science
KEYWORDS: briangriftin; ccpbioweapon; cdc; covid; effectiveness; frccpmoles; herecometheqtards; kneepads4gates; vaccine
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To: Brian Griffin

more baby, give me more


21 posted on 10/14/2021 1:01:18 AM PDT by Pollard (PureBlood)
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To: bagster

Statistics are your friend. Covid 19 has killed 720,000 in the United States alone, approaching 5 million worldwide.

The vaccine hasn’t even come close.


22 posted on 10/14/2021 1:03:45 AM PDT by firebrand
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To: firebrand
a weird religious fervor

It's known as caring about others.

____________

It is so kind to force experimental mRNA injections developed in under a year with an unproven technology on everyone regardless if someone needs it or not an regardless of the consequences. If someone refuses your “kindness” you frothing mad fanatics want to other them and force them into poverty. You and your Nazi doctor clown posse want to inject small children and pregnant women and are far to comfortable with force and violence.

What does a hypochondriac, corporate fascist like you do when you aren't trying to “help” someone?

COVIDiots like you are deluded, fanatical, and dangerous.

23 posted on 10/14/2021 1:09:58 AM PDT by WMarshal ("Those who would give up essential liberty, to purchase a little temporary safety, deserve neither.")
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To: firebrand
Covid 19 has killed 720,000

No it hasn't. More Derp State fakery.

If statistics are your friend, stop listening to the wrong people for yours.


24 posted on 10/14/2021 1:11:47 AM PDT by bagster ("Even bad men love their mamas".)
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To: bagster
Dear Mojo retread troll.

Yeah, I'm a retread from when I was banned in 2001.

Good to see COVID isn't the only area where critical thinking eludes you.

25 posted on 10/14/2021 1:12:53 AM PDT by semimojo
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To: semimojo; Hannibal

This I know. And weren't you the cutest little liberal troll back then.

#HGYouWereRight

#DetectiveBagsterAlwaysGetsHisMan

#WhatDoYouTrulyDesire


26 posted on 10/14/2021 1:18:03 AM PDT by bagster ("Even bad men love their mamas".)
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To: Brian Griffin
The CDC has no credibility. Zero. I believe nothing coming from it. Given its track record of lies and obfuscations, especially concerning Covid, neither should anyone. It is just another tool of Big Pharm and the Leftist/Globalist Filth Cabal™ used to push their agendas, to sell their garbage and to make each other fabulously wealthy.

Remember, none of these entities want you healthy. Instead, they are constantly inventing new "illnesses" to pick money from your pocket or new "crises" to keep you off balance, to impoverish you and to strip you of your freedoms. The CDC is part of that diabolical machine. Believe nothing coming from it including "and," "a," and "the."

27 posted on 10/14/2021 1:22:15 AM PDT by Rocco DiPippo (I)
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To: WMarshal

I flap my hands around and wonder what has happened to Free Republic.


28 posted on 10/14/2021 1:25:28 AM PDT by firebrand
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To: firebrand

the first thing anyone who has made their living with numbers will tell you about statistics is this,

“There are lies, damn lies, and then there are statistics.”

you say absurd things like “Statistics are your friend. Covid19 has killed...” proving you haven’t got a clue about how to apply statistics to anything.


29 posted on 10/14/2021 1:26:01 AM PDT by dadfly
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To: bagster

Congratulations. You are the one millionth person on Free Republic to say “you can’t trust the source” when you have no good argument.


30 posted on 10/14/2021 1:27:25 AM PDT by firebrand
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To: dadfly

Oh sorry. Bagster got there before you in the When You Don’t Have Any Answer Throw Dirt at the Statistics Sweepstakes.


31 posted on 10/14/2021 1:29:57 AM PDT by firebrand
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To: Brian Griffin
The CDC is a corrupt, hollowed-out Federal agency inhabited by Deep State hacks and controlled by them and leftist, scumbag, so-called "elites." No rational personal can take it seriously at this point. No rational person can automatically accept as truth anything coming from it because it has been wholly corrupted by leftist ideology, politics and the influence of Big Pharm and corrupt "scientists," "researchers," and "doctors" who are on the hook to Big Pharm .

https://www.realclearpolitics.com/articles/2020/03/11/cdc_centers_for_damaged_credibility_142622.html#!

--The notorious 1976 swine flu vaccine scandal was catalyzed by mass hysteria whipped up by CDC junk scientists clamoring for more money; Congress obliged and nearly 45 million Americans were unnecessarily jabbed with a vaccine for a disease that had fizzled by the time the shots were ready. The vaccine resulted in an increased risk of developing Guillain-Barre syndrome -- leading to muscle weakness and paralysis.

--In 1999, the CDC misspent $22.7 million appropriated for chronic fatigue syndrome and was investigated in 2001 for squandering $13 million on hepatitis C research.

--In 2000, the agency essentially lied to Congress about how it spent up to $7.5 million earmarked each year since 1993 for research on the deadly hantavirus. "Instead, apparently without asking Congress, the CDC spent much of the money on other programs that the agency thought needed the funds more," The Washington Post disclosed at the time. The diversions were impossible to trace because of shoddy CDC bookkeeping practices.

--In 2009, the CDC recalled 800,000 doses of swine flu vaccine for children ages 6 months to 3 years after the products manufactured by Sanofi Pasteur failed potency tests.

--In 2012, the CDC's main building housing infectious anthrax, SARS and monkeypox gases was discovered to have been leaking deadly pathogens due to a flawed engineered airflow system.

--In 2014, the CDC's lackadaisical response to Ebola virus gave the greenlight to Patient Zero Thomas Eric Duncan and infected medical personnel to board commercial airlines while ill -- exposing untold numbers of travelers to the deadly disease. Expensive isolation chambers that had been subsidized by taxpayers to the tune of $15 million sat buried in a Georgia warehouse.

--For the past few years, the agency has employed a fear campaign to induce Americans to get regular flu shots (formulated based on guesswork) using flawed statistics and despite international scientific conclusions that there is "no evidence" to support the CDC's assumptions that the vaccine reduces transmission of the virus or the risk of potentially deadly complications.

--Just this week, the Informed Consent Action Network reported astonishing results from its lawsuit against the CDC to obtain scientific documentation for the agency's claim that "vaccines do not cause autism" -- specifically for the first seven vaccines given to your child in their first six months of life. CDC had stonewalled, and then finally produced 20 studies

-- 18 of which were irrelevant to ICAN's public records request and two of which suggest that vaccines may indeed cause autism. In other words: The CDC is lying while continuing to smear vaccine critics as "conspiracy theorists" and public health threats."

32 posted on 10/14/2021 1:34:50 AM PDT by Rocco DiPippo (I)
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To: firebrand

Dr. Michael Yeadon states most covid-19 deaths are directly attributed to Remdesivir or Midazolam

https://welovetrump.com/2021/10/11/dr-michael-yeadon-states-most-covid-19-deaths-directly-attributed-to-remdesivir-or-midazolam/

Dr. Michael Yeadon is the former vice president and chief scientist for allergy and respiratory at Pfizer.


33 posted on 10/14/2021 1:36:51 AM PDT by Golden Eagle
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To: firebrand

i don’t read statistics...

i watch people’s actions...

our government’s actions and double standards prove the kung flu is a scam...


34 posted on 10/14/2021 1:38:15 AM PDT by heavy metal (smiling improves your face value and makes people wonder what the hell you're up to... 😁)
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To: firebrand

bs word play won’t get you anywhere with me. and my comment has nothing to do with anyone else’s here. not really talking to you, really i’m attempting to defend the less statistically astute from what is imo, your misinformation and misuse of statistics. i’m simply calling out your obvious mishandling of a very controversial statistic. i.e., the *estimated* number of deaths from covid19. for example, you didn’t even bother to source your statistic, let alone provide any analysis, confidence measures, or critique on it’s internal consistency from a statistical standpoint.

thus you give the appearance of just stating it as a fact, which immediately makes you look like you don’t know what the hell you’re talking about.

and given the nature of statistical analysis and the publicized and problematic ways that various entities like for instance, the very discredited CDC in this thread, have gone about compiling and reporting it, your presentation is absurd as i said previously.


35 posted on 10/14/2021 2:01:40 AM PDT by dadfly
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To: firebrand
Congratulations. You are the one millionth person on Free Republic to say “you can’t trust the source” when you have no good argument.

*bows*

Thank you, thank you.

I'd like to thank the CDC for being, well....the CDC.

#YouLoveMeYouReallyLoveMe


36 posted on 10/14/2021 2:03:16 AM PDT by bagster ("Even bad men love their mamas".)
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To: firebrand
I flap my hands around and wonder what has happened to Free Republic.

We know.


37 posted on 10/14/2021 2:08:49 AM PDT by bagster ("Even bad men love their mamas".)
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To: firebrand
Oh sorry. Bagster got there before you in the When You Don’t Have Any Answer Throw Dirt at the Statistics Sweepstakes.


38 posted on 10/14/2021 2:16:35 AM PDT by bagster ("Even bad men love their mamas".)
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To: firebrand

Of the 720,000, about 85% were murdered by pharma and the medical industrial complex. A nurse friend who is offering early treatment to people in her town, gratis no less, has not lost a single patient. My own MD, who has treated hundreds using the FLCCC protocol, has not lost a single patient. Dr David Brownstein has treated hundreds with zero deaths. There are many others. How sad that people have to often be saved in secret! The CDC treatment guide is a roadmap to genocide, and that is not an exaggeration. The network I support fights hospitals daily to advocate for cv19 patients who are victims of criminally substandard care with zero effective therapeutics offered. We know their death routine. Some day these toady MDs and nurses will be called to account for their pride, ego, stupidity, arrogance and criminal negligence.


39 posted on 10/14/2021 2:54:43 AM PDT by SecAmndmt (Cv19 vaccines are Phase 2 of the CCP bioweapon)
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To: firebrand
"I flap my hands around and wonder what has happened to Free Republic."

----------------

I will give you a clue.

The Republican base is tired of the Republican leadership's lies and the outright betrayals of Republicans and patriotic Americans. Thanks to the Bush Crime Family the GOP has muzzled and incapacitated our ability to fight the communist onslaught for 40 years and we are mad as hell. We are beginning to rejecting both the HOP leadership and their toadies. This rejection is happening in the real world and online here online at Free Republic.

The scamdemic is nothing but cover for a globalist, totalitarian coup and any Freepers that advocate for useless masks, illegal federal medical mandates, and fascist lockdowns are committing a disgusting deception and betrayal.

People that advocate evil like that are not out friends and allies. Go post on DU.

40 posted on 10/14/2021 3:15:32 AM PDT by WMarshal ("Those who would give up essential liberty, to purchase a little temporary safety, deserve neither.")
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