OK to question it now? CDC says Pfizer vaccine has ‘safety signs’ that could add risk of stroke


It’s the kind of story that would have gotten a writer banned from social media just a few months ago: The Centers for Disease Control and Prevention on Friday said a certain Covid-19 vaccine “safety signal” has been identified and the agency is investigating whether the vaccine creates an increased risk of ischemic stroke in people 65 and older.

But not to worry, the CDC said it is not changing its recommendation that everyone should get the Covid shot, starting as young as 6 months.

The government uses multiple, complementary safety monitoring systems to detect possible safety signals for vaccines and other medical countermeasures and to facilitate further investigation.

Often these safety systems detect signals that could be due to factors other than the vaccine itself.

“Following the availability and use of the updated (bivalent) COVID-19 vaccines, CDC’s Vaccine Safety Datalink (VSD), a near real-time surveillance system, met the statistical criteria to prompt additional investigation into whether there was a safety concern for ischemic stroke in people ages 65 and older who received the Pfizer-BioNTech COVID-19 Vaccine, Bivalent. Rapid-response investigation of the signal in the VSD raised a question of whether people 65 and older who have received the Pfizer-BioNTech COVID-19 Vaccine, Bivalent were more likely to have an ischemic stroke in the 21 days following vaccination compared with days 22-42 following vaccination,” the CDC said.

“This preliminary signal has not been identified with the Moderna COVID-19 Vaccine, Bivalent. There also may be other confounding factors contributing to the signal identified in the VSD that merit further investigation.”

The CDC noted that no other safety systems have shown a similar signal and multiple subsequent analyses have not validated this signal:

  • A large study of updated (bivalent) vaccines (from Pfizer-BioNTech and Moderna) using the Centers for Medicare and Medicaid Services database revealed no increased risk of ischemic stroke
  • A preliminary study using the Veterans Affairs database did not indicate an increased risk of ischemic stroke following an updated (bivalent) vaccine
  • The Vaccine Adverse Event Reporting System (VAERS) managed by CDC and FDA has not seen an increase in reporting of ischemic strokes following the updated (bivalent) vaccine
  • Pfizer-BioNTech’s global safety database has not indicated a signal for ischemic stroke with the updated (bivalent) vaccine
  • Other countries have not observed an increased risk for ischemic stroke with updated (bivalent) vaccines

“All signals require further investigation and confirmation from formal epidemiologic studies. When one system detects a signal, the other safety monitoring systems are checked to validate whether the signal represents an actual concern with the vaccine or if it can be determined to be of no clinical relevance,” the CDC said.

Although the totality of the data currently suggests that it is very unlikely that the signal in VSD represents a true clinical risk, we believe it is important to share this information with the public, as we have in the past, when one of our safety monitoring systems detects a signal. CDC and FDA will continue to evaluate additional data from these and other vaccine safety systems. These data and additional analyses will be discussed at the upcoming January 26 meeting of the FDA’s Vaccines and Related Biological Products Advisory Committee.

No change in vaccination practice is recommended. CDC continues to recommend that everyone ages 6 months of age and older stay up-to-date with Covid-19 vaccination; this includes individuals who are currently eligible to receive an updated (bivalent) vaccine.

“Staying up-to-date with vaccines is the most effective tool we have for reducing death, hospitalization, and severe disease from Covid-19, as has now been demonstrated in multiple studies conducted in the United States and other countries.

Overall CDC safety data for the bivalent Covid-19 vaccines are available here.

No change is recommended in Covid-19 vaccination practice, which can be found here.

In the Friday statement, the CDC said that the preliminary signal hasn’t been identified with the Bivalent Moderna COVID-19 vaccine.

“Following the availability and use of the updated (bivalent) COVID-19 vaccines, CDC’s Vaccine Safety Datalink (VSD), a near real-time surveillance system, met the statistical criteria to prompt additional investigation into whether there was a safety concern for ischemic stroke in people ages 65 and older who received the Pfizer-BioNTech COVID-19 Vaccine, Bivalent,” the CDC said. 


  1. They still won’t admit that high enough vitamin D levels were the key all along.

    Dr. Pierre Kory: A national VITAMIN D campaign to get levels above 50 would have changed the face of Covid!

    “If I were ever put in charge of the response to this, first thing I would have done: a national public service campaign telling all the doctors to check the vitamin D levels of all their patients, and put them on a replenishment protocol, getting those levels above 50 [ng/ml]. If you had just done that simple thing, the government knows, and they’ve known for decades that in some estimates, 90% of our population is vitamin D deficient. And that’s deficient even according to their very low levels of vitamin D. Had we done a national vitamin D replenishment campaign , that would have changed the face of this [sweeping his hands to his sides, palms down].”


      • Vitamin D’s effect on the immune system is a medical fact. Real question is why was it suppressed as a supplement for covid patients since vitamin d insufficiency is so high in the populace?
        Another question is why was ivermectin suppressed even though it is virtually harmless unless provided in large doses? (Numerous studies show it has significant effects in reducing hospitalization and deaths in covid patients).
        Yet they keep pushing medication or vaccines that are at best useless and at worse harmful and deadly. Clue, they are the ones that make lots of money.


        The real tinfoil hat people are the ones still taking this shot.

        • Billy’s ancestral kin were the ones burning the town healers who offered up willow bark remedies back in old Salam, its a genetic defect, don’t be too harsh on them/they.

      • You can have your favorite doctor pull a blood sample for testing. Simple process. Of course, you could just lay out on a beach and naturally absorb vitamin D.

      • Try going over the virtual pond, and check the data out from the Brits office of statistical analysis, it’s right there in B&W.

    • I see now that Dr. Kory, prior to his vitamin D push, was a big pusher and user of “ivermectin” to treat Covid and prevent it. It appears Dr. Kory took ivermectin every week to prevent Covid and he still caught it and then went to taking it twice/week.
      I suspect Dr. Kory’s ideas on vitamin D are about as asinine as his thoughts on “ivermectin.” Just my opinion Jeff.

      • If you want to learn about studies on Vitamin D then you can search the web for them. If you don’t mind getting a link from a doctor you consider a quack, then you can ask Dr Cory. North apparently referenced a trigger for you when including ivermectin in the discussion. I think the best takeaway is to re-evaluate our beliefs that were formed under the guidance of organizations like the CDC who are now displaying that they are subject to bias and corruption like any organization is.

        • I had googled Dr. Kory to learn about his ivermectin use Brian. And I wasn’t interested in studies on Vitamin D, but studies that showed that Vitamin D would have changed the face of Covid.
          Frankly, nobody has come up with such and Jeff has gone silent. Heheh!

          • I believe the recent study behind the claim that vitamin would have changed the face of covid-19 is at ‘https://www.news-medical.net/news/20221115/Vitamin-D-can-reduce-severity-and-spread-of-COVID-19.aspx . Duckduckgo had it about 5 down in my search results.

          • Thanks Brian and I read that study noting particularly the “However, it is unclear whether Vitamin D therapy can lessen the likelihood of COVID-19 infection.”
            Sorry but I just don’t see that it would have changed the face of Covid. Frankly I take vitamin B3 (2000 units) daily and was recently reduced to that from 3000 units by my Dr. who said there wasn’t evidence of the larger dose being helpful. Of course this Dr. had no idea about the increased benefits of horse de-wormer. Heheh!

      • You really are a product of your flat-earth marxist pseudo-science religion Bill……… #evolveorbecomeextinct

          • You sir have no idea what you speak of. Ivermectin is used to de worm horses and stock animals. Problem is it is not the same as the human dose. Human dose is a tablet, animal a topical. I suspect you didn’t use your power of Google correctly and now appear as a creature living under a bridge, which prefers to eat goats. I am a Wuhan survivor of the Delta variety. If it were not for hydroxychloriqune, I would have been worse than it was. I think I heard your bridge calling you

          • Why didn’t you take the horse de-wormer along with Vitamin D? Heheh! Don’t tell me but you also aren’t vaccinated, right?
            I’m vaccinated and haven’t gotten the virus at all. That is just anecdotal evidence that means nothing really-sort of like your experience with your quack.

          • You actually need 4 times that done Bill, plus some K2 to stop them their arteries from drain piping……….

          • Billy – anyone who refers to Ivermectin, a drug that the WHO designated as essential for humankind, as horse dewormer, is an idiot!

          • Eric, it was recommended by my Dr. to cut back on D3 with his reasoning that there wasn’t evidence of benefits for me specifically.
            Thanks, but I’ll take the advice I paid for.
            FfF, “This “wonder drug,” as many called it, was prescribed to treat illnesses, which include head lice, scabies, river blindness (onchocerciasis), strongyloidiasis, trichuriasis, ascariasis, and lymphatic filariasis.” This was approved for humans in 1988, for the above illnesses.

          • You have an answer for everything Bill, yet you have no proper science to support your dodgy data. #lesswikipediabill

          • Eric, when it comes to medicine I let the medical Doctors do the science. And you can give us your science supporting 8000 units of D3 that I suspect is pulled out of your whatever.

        • You missed this one Bill, you should offer-up some of that sage CNN wisdom, hehe: ‘https://mustreadalaska.com/linda-boyle-cdc-is-not-shooting-straight-on-vaccine-advice/

        • “However, it is unclear whether Vitamin D therapy can lessen the likelihood of COVID-19 infection.”

          This is in the background portion which justifies the study. Read further and especially the conclusion:
          “Overall, the study findings showed that vitamin D2 and vitamin D3 supplementation significantly reduced the risk of COVID-19 infection and death within 30 days. Therefore, the researchers believe vitamin D3 supplementation could be a valuable strategy for limiting the spread of COVID-19 infection and related death and racial differences in COVID-19 outcomes.”

          • Brian, if you read again my post you’ll see that the quote I posted only referred to Covid infection whereas your latest conclusion refers to “infection and death.”
            Do you see the difference? If you still insist on pushing your vitamin D3 leads to a lessening of covid infection you’ll need to come up with some sort of additional link or study that shows that.

  2. Practically speaking if a member of a family has a stroke everything changes in a family. Perhaps a neurologist advises; a couple three cardiologists get involved, rehabilitative physicians may be involved, orthotics made and remade, wheelchairs, high tech canes, swallowing difficulties, acrobats become people with a huge percentage of likelihood of falling swallowing becomes difficult, there is a need for psychological comfort. Caregivers begin to physically fall apart. Meanwhile, ethnic varieties make up lies about the stroked family, the government agencies and their partners surveil and plot further biological illnesses to treat. The local government can’t figure why they shouldn’t be sexualizing each other in the public financed job with pubic cookies and are trying to figure how to increase parasitic options. And unempathic immunologists and pharma trade funds to create more illnesses and immune spikes and the kids wonder if growing up is that great. It wasn’t like this in earlier during less insane generations. Are you 88 percent likely to fall, yet? Or your loved one? The one the gal down the street imagines will love to have so much more life with? Her husband says to himself: “what’s wrong with this picture”? Meanwhile it won’t stop snowing. Jesus is the answer after all.

  3. Strokes, blood clots legs and lungs, heart attacks, leukemia, cancer that should about cover it. What can you say about the ghouls who pushed this virtually untested crap. There is absolutely NO denying the amount of injury and death at this point. Be interesting to watch over the next 12 months.

  4. I’ll bet they think we aren’t familiar with their template. We know. The Rockafellas, the Billderbergurgers,the Mason’s, the thugs. On the one hand, they got the fighters just glad to have a spot on the team, then the prominent pecuniary philanthropy, occluding the other tuffs that goes on to make bologna. And the new generation. Nothing new under the sun except mrna injections with patents. “Bunches of injections for sale’!” BIo hazards. Jesus, please save this planet.

  5. It was so simple…daily exercise, proper diet, and Vitamin D3. Watch your weight, stay active, and you wouldn’t need all this junk. The CDC is just like the DOJ, FBI, EPA, and the other alphabet soup agencies. Pirated and corrupted.

    • True. But one does not necessarily preclude the other.

      The question for me is what will further research show? Assuming the research is legitimate science and not agenda driven.

    • Yes, so why would you want to take something that increases that risk. My lifelong bad habits certainly contributed to my stroke six years ago, and having recovered mostly, like most stroke survivors, never want to experience that activity again. The doctor that advised me to substitute baby aspirin for my blood thinner a few months after my first stroke was wrong and I had a second. I now listen less to doctors and more to my heart. My gut told me to take my chances on getting the virus rather than the shot. I would prefer death over being a vegetable, but that’s just my choice, which is really the point, correct? You are your best advocate. It’s all a crap shoot.

  6. There should be a massive lawsuit and criminal charges for the CDC ,fauci ,Pfizer and anyone that threatened the population into getting the jab. This is conspiracy and incompetence at the very top.

  7. I sure hope the people my company fired for not getting this shot sue them. I can’t, I took it before they mandated it.

  8. “OK to question it now?……..”
    Only if you do it nicely and refuse to point out the tyranny of how we got here.

  9. Plus Dr. Leana Wen, columnist for the left leaning Washington Post and medical advisor to CNN, recently wrote an article in the Post that outlined only about 30% of those with a Covid diagnosis hospitalized actually came to the hospital because of Covid. They were incidental findings because hospitals tested everyone and if found positive and the patient died Covid was a diagnosis added to the death certificate. Basically the tinfoil hat theories of gunshot wound victims dying of Covid for stat padding was true.

  10. Since I had COVID on late 2021, I have been taking 250 mcg’s equivalent to 10,000 IU’s everyday along with 50 mg’s of zinc and 400 mg’s of magnesium. Haven’t had even a cold since then. Not vaccinated. Never will. Almost 60 years old. I am disgusted by our medical community, our government, our schools, our so-called “leaders” who are just a bunch of sheep chasing their paychecks while putting their brains on a permanent vacation. From the very beginning, the cases to deaths ration showed that COVID was no more serious than a bad flu year. It was the treatment in the hospitals, ventilators, Remdesivir, isolation from families, withholding of Ivermectin use at early onset, that killed all those people. The medical community should be ashamed! What a life’s lesson COVID has been to teach me the extreme extent of the stupidity and/or deception of mankind.

  11. Taking the politics out of this:

    Far as I can tell, this is the first time a treatment of this type was rushed out this fast and with so little (relatively) clinical trials. There wasn’t near enough time to see what long term effects this might cause.

    Clearly computer modeling is insufficient for things like this. There is zero substitute for time and multiple clinical trials.

    We got scared, this got politicized, and rationality when out the window. Along with established scientific norms.

    The real legacy of Covid will be the destruction of faith the general public has in science and the healthcare system. Said trust is a lot like virginity. Easily lost and irreplaceable.

  12. This reminds me of when they put the J&J covid shot on hold because of the early reports of clotting. After about a week of claiming to be cautious, they resumed it again. The safety signals have been overwhelming since then, and now they see a safety signal? Comparing short term versus medium term heart conditions after the shot seems like a straw man to me. They would now come up with a justification for why this is and come across as proving the shots are safe after all!

    Better to compare excess deaths before and after the shots were rolled out.

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