A team of U.S. federal government researchers is warning of a massively elevated risk of stroke among people who have received “vaccines” for the flu and Covid within close proximity.
The researchers, funded by the U.S. National Institute of Allergy and Infectious Diseases (NIAID), used a new advanced modelling framework to identify the links.
The team was led by Dr. Stanley Xu of the Department of Research & Evaluation at Kaiser Permanente Southern California (KPSC).
The findings of the study were published in the American Journal of Epidemiology.
The scientists hypothesized that overlapping risk periods following close-proximity or simultaneous vaccination could obscure or misattribute vaccine-related adverse events in standard self-controlled case series (SCCS) designs.
They proposed a novel three-part SCCS model to disentangle these risks, focusing on ischemic stroke following coadministration of the Pfizer Covid mRNA and influenza “vaccines.”
The NIAID-funded study introduced a “three-part” SCCS model that separately estimates adverse event risks:
- After each “vaccine,” individually
- During the overlapping risk period (within 42 days) when both “vaccines” are administered on the same day or in close succession
Researchers conducted simulations and applied the model to 2022–2023 data from KPSC.
The dataset includes members under age 65 who received the two “vaccines.”
Ischemic stroke incidence was derived from electronic health records without chart review confirmation.
The researchers found that patients with a prior COVID-19 infection were at the highest risk of stroke after they received “vaccines” for flu and Covid in close succession, or simultaneously.
This indicated both positive multiplicative and additive effects, suggesting synergistic risk amplification.
Simulations confirmed that standard models may misestimate risks by failing to isolate overlapping exposure periods. Only the new three-part model yielded consistently unbiased estimates across scenarios.
This landmark study raises fresh concerns about “vaccine” safety involving co-administration.
The model identified a concerning ischemic stroke signal among Covid-recovered individuals receiving both vaccines close together.
Importantly, this Covid-recovered cohort represents a sizable population.
This study comes amid growing concerns about the safety of flu vaccines.
As Slay News recently reported, the world-renowned Cleveland Clinic has confirmed that influenza vaccines are ineffective at preventing flu cases and only increase the risk of harm.
The verdict on the flu vaccine from the Cleveland Clinic’s large-scale prospective cohort study has delivered a shocking blow to the mass vaccination agenda.
The study found that not only was the vaccine ineffective, but it was also associated with a significantly increased risk of infection.
The findings of the study led by Dr. Nabin Shrestha, the head of the Cleveland Clinic’s Department of Infectious Diseases, were published in the MedRvix journal.
The study tracked over 53,000 employees during the 2024–2025 respiratory viral season.
The researchers found that the “vaccines” only increase the risk of harm while being ineffective in tackling the virus.
Meanwhile, a U.S. federal court has declared in a landmark ruling that influenza vaccines cause Guillain-Barré Syndrome, an incurable and life-threatening neurological disorder.
The ruling was issued by the U.S. Court of Federal Claims.
The court sided with Alan Lien of Wisconsin, who had suffered life-changing injuries caused by a flu shot.
Lien was awarded $500,000 in damages for his vaccine-induced injury.
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