33% of Americans Say COVID Vaccine Kills Some—25% Believe MMR Vaccine Causes Autism: Kaiser Survey

Originally published August 29, 2023 11:29 am PDT

A recent survey conducted by the Kaiser Family Foundation (KFF) unveiled significant variations in the perceptions Americans hold regarding vaccines.

The KFF Health Misinformation Tracking Poll Pilot, conducted between May 23 and June 12 with 2,007 adult participants, delved into beliefs associated with COVID-19, vaccines, and reproductive health.


According to the results, 25% of those surveyed indicated belief in a possible connection between the MMR (measles, mumps, and rubella) vaccine and autism in children.

Despite not being mentioned by the survey, these beliefs may stem from information regarding the new MMR vaccine “PRIORIX,” which has not been tested for cancer risk, toxicity, or fertility problems, according to the package insert that comes with the drug.

“PRIORIX has not been evaluated for carcinogenic or mutagenic potential or for impairment of fertility,” the drug’s insert reads, under the section titled “NONCLINICAL TOXICOLOGY.”

The insert also indicates that adverse events were only tracked for six months following vaccination.

However, in section 6.2 of the insert, GlaxoSmithKline, the manufacturer, confirms reports that their MMR vaccine has caused nervous system disorders such as encephalitis, cerebellitis, cerebellitis-like symptoms (including transient gait disturbance and transient ataxia), Guillain-Barré syndrome, transverse myelitis, peripheral neuritis and afebrile, seizures, and syncope.

This is important because encephalitis refers to inflammation of the brain, which can lead to a range of symptoms and severity levels, even to neurological life-threatening complications.

The connection between brain inflammation, which the MMR vaccine is said to cause, and autism has been widely established in medical literature.

For example, a December 2021 publication in the peer-reviewed journal Frontiers in Psychiatry affirms that there “is emerging evidence of a connection between AE and ASD” and that “[m]ultiple reports have described the presentation of ASD and/or autistic features in cases of diagnosed AE.”

“AE” stands for autoimmune encephalitis, while “ASD” stands for autism spectrum disorder.

The study authors conclude that “there are important reasons for AE to be treated as a clinical priority in the context of ASD.”

“It can no longer be assumed that regression, for example, is just ‘a part of autism’ without any need for investigations,” they write. “The cases of ASD appearing alongside AE provide a template for further clinical examination of such regressive onset patterns.”

Moreover, an earlier Frontiers publication established that symptoms of brain inflammation and autism are similar enough for one to be mistaken for the other.

The study authors argue that early diagnosis of autoimmune encephalitis can increase treatment effectiveness and may even “prevent the long-term consequence of being misdiagnosed with autism spectrum disorder.”

“Earlier diagnosis of autoimmune encephalitis increases the potential of curative treatments by enabling provision of timely immune therapy or immune modulatory therapy, which can prevent long-term consequences, such as being misdiagnosed with autism,” they write.

Thinking Autism, a U.K.-based charity working to improve quality of life for people with autism and their families, also confirms it “is highly likely that some, or even many, cases of regressive autism are misdiagnosed cases of autoimmune encephalitis.”

Furthermore, in its article titled “Autism Associated With Anti-NMDAR Encephalitis,” the Autoimmune Encephalitis Alliance (AE Alliance), a U.S.-based non-profit aiming to find a cure for autoimmune encephalitis through research and clinical care, affirms that the majority of those with autism also have encephalitis.

“At least 69% of individuals with a diagnosis of ASD have neuroinflammation or encephalitis,” AE Alliance states.


The KFF survey also found that a third of participants hold the view that “COVID-19 vaccines have caused thousands of sudden deaths in otherwise healthy people.”

Ten percent labeled this belief as “definitely true,” with another 23% marking it as “probably true.”

Although not mentioned by the survey, the belief in a link between coronavirus jabs and autism is supported by data taken from the U.S. Centers for Disease Control and Prevention (CDC).

The CDC’s Vaccine Adverse Events Reporting System (VAERS) confirms that there have been no less than 35,980 deaths linked to the COVID shot.

The CDC notes that many of these deaths—as well as injuries and hospitalizations—occur among individuals “with no reported medical history,” supporting the KFF poll participants’ belief that COVID jab-linked deaths do occur among “otherwise healthy people.”

It’s worth noting here that a 2010 analysis submitted to the U.S. Department of Health and Human Services (HHS) Agency for Healthcare Research and Quality has established that fewer than 1% of vaccine adverse events that do occur are ever reported to the CDC in the first place.

If that’s correct, then the number of deaths, hospitalizations, and injuries linked to vaccines could be 100 times higher than the CDC’s data indicate.


Over a quarter of the KFF survey respondents expressed a belief in the potential for COVID vaccines to negatively affect fertility.

Supporting this belief, Project Veritas earlier this year published a video featuring a conversation between an undercover journalist and Dr. Jordon Walker, a senior Pfizer executive who didn’t know he was being recorded.

Dr. Walker, who is Director of Research and Development at Pfizer, expresses concern over the possible side effects of the COVID vaccine on women’s reproductive health, specifically pointing to irregular menstrual cycles.

In the video, Dr. Walker says there “is something irregular about the menstrual cycles. So, people will have to investigate that down the line because that is a little concerning.”

The doctor goes on to worry about the vaccine affecting women’s menstrual cycles.

“The vaccine shouldn’t be interfering with that. So, we don’t really know,” he says, adding that “the science” suggests the vaccine should not be affecting the hypothalamic-pituitary-gonadal axis (HPG axis), which are the “hormones that regulate their menstrual cycle and things like that.”

When questioned by the reporter about the impact of the vaccine on fertility, Dr. Walker says, “Yeah, because they control the cycle. So if it’s impacting that, it must be impacting these hormones somehow. But then we need to find out how it’s impacting these hormones because the signaling starts in the brain.”

Walker goes on to say that he hopes “we don’t discover something really bad down the line. I hope we don’t find out that somehow this mRNA lingers in the body” because “it has to be affecting something hormonal to impact menstrual cycles.”

An Israeli study published in June 2022 by the peer-reviewed medical journal Andrology titled “Covid-19 vaccination BNT162b2 temporarily impairs semen concentration and total motile count among semen donors” concluded that COVID shots trigger an immune response that caused semen concentration to temporarily decline.

“Systemic immune response after BNT162b2 vaccine is a reasonable cause for transient semen concentration and TMC (total motile count) decline,” the paper reads.

The study showed that the vaccine causes “selective temporary deterioration of sperm concentration 3 months after vaccination resulting with impaired TMC.”

Moreover, American Faith reported in August 2021 how Dr. Michael Yeadon, former Vice President and Chief Scientist for Allergy and Respiratory research for Pfizer Inc., expressed concern about the safety of COVID-19 vaccines for women of childbearing potential.

He claimed that robust reproductive toxicology analyses have not been conducted for these vaccines and that they haven’t tested for their impact on fertilization and fetal development.

The former Pfizer vice president cited a report showing that the vaccine concentrates in the ovaries of rats, which he assumes is also happening in vaccinated women.

He also cited a study showing 15 women who received the Pfizer vaccine had a 300% increase in antibodies against the placenta.

Dr. Yeadon believes that this represents a vaccine-induced autoimmune attack on the placenta and warned women of childbearing potential not to accept them.

Moreover, a peer-reviewed study published in June of this year in Women’s Health found that mRNA-based SARS-CoV-2 vaccines can negatively affect menstruation, especially in women with certain inflammatory gynecological conditions.

The authors confirmed that COVID vaccinations “can have an impact on menstruation, and this impact may be more notable in women with inflammatory gynecological pathologies such as endometriosis.”

Endometriosis is a medical condition characterized by the growth of tissue similar to the uterine lining outside the uterus. This abnormal tissue growth can occur in various locations in the body where it is not supposed to, including the ovaries, fallopian tubes, and supportive tissues that hold the uterus in position.

A total of 848 women who received at least two doses of mRNA-based COVID vaccines were recruited. Four-hundred-and-seven had endometriosis (endometriosis group) and 441 did not (non-endometriosis group).

In the endometriosis group, 52.6% of patients self-reported menstrual-associated changes in the first cycle after vaccination and 29% after the second cycle of vaccination.

Significantly, patients in the non-endometriosis (healthy) group reported similar rates of vaccine-induced side effects compared to patients with endometriosis, demonstrating the mRNA jab negatively affects all women relatively equally, regardless of inflammatory gynecological condition status.

Among the non-endometriosis (healthy) group, 48.8% of patients self-reported menstrual-associated changes in the first cycle after vaccination and 28.1% after the second cycle of vaccination.

The researchers emphasized that “the total symptoms recorded were not different between the two groups.”

Moreover still, a 2022 British Medical Journal (BMJ) commentary revealed that COVID-19 vaccination is associated with an increased risk of longer menstrual periods during the first 6 months post-vaccination, especially for women who had irregular, short, or long pre-vaccination menstruation.

In the commentary, Italian researchers analyzed a study published in the American Journal of Obstetrics and Gynecology (AJOG) and conducted by doctors from Harvard, Brigham and Women’s Hospital, and Michigan State University which found COVID vaccination was associated with a “change to longer cycles in the first 6 months after vaccination.”

The menstrual cycle changes occurred “particularly among women whose cycles were short, long, or irregular before vaccination,” the authors explained.

In their commentary, the Italian researchers referenced another 2022 study published in Open Medicine that found around half of reproductive-age women reported menstrual irregularities after getting the first dose of a COVID vaccine, increasing to 60-70% after the second dose.

That study, based on data collected through a web survey that asked women to self-report their symptoms after vaccination, similarly found the type of vaccine did not make a difference.

The commentary authors conclude that the current “available evidence” proves that only COVID-19 vaccination, not COVID-19 infection, is linked to menstrual irregularities: “[A]ll the available pieces of evidence confirm that only COVID-19 vaccination, but not COVID-19 infection, is associated with menstrual irregularities,” they write.

Furthermore, an Obstetrics & Gynecology study of almost 4,000 women in the U.S. found that menstrual cycle lengths were extended by about 0.7 days after a first dose and 0.9 days after a second dose of a COVID vaccine.

Moreover still, a publication in the Journal of Infection and Chemotherapy found that the difference in menstrual cycle length among vaccinated women increased by 0.6 days after one dose of the vaccine and by 0.6-1 days after two doses of the vaccine. The change was more significant among women who received two doses within the same menstrual cycle, with an average difference of 3.9 days.

Finally, a study of 5,000 women in six Arab countries found that vaccinated women had more frequent back pain, nausea, tiredness, pelvic pain, and passage of loose stools in connection with their menstruation compared to unvaccinated women. Vaccinated women also reported experiencing heavier flow and more days of bleeding. The paper was published in Influenza and Other Respiratory Viruses.