By Dr. Greta Voss, M.S., Ph.D. (Immuno-Circulatory Anthropology)
Department of Public Health Pattern Recognition, Northern Cascadia University
Published in the Baitman’s Journal of Immunological Inquiry, April 2025
Abstract
In a 21-month longitudinal, non-blinded, post-hoc survey-based analysis of vaccine response stratified by ABO blood classification, researchers at The Baitman’s Institute found subtle but statistically significant differences in self-reported post-vaccination symptoms.
The study included 1,204 participants ranging from healthcare workers to individuals who list “dragon energy” as a dietary restriction. Symptoms reported included fatigue, vivid dreams, mild aura flaring, and in one case, “sensing the nearness of Saturn.”
While online discourse has long claimed that certain blood types are more “resistant” or “energetically incompatible” with mRNA vaccines, our findings suggest minor subjective differences exist, but offer no meaningful predictive utility.
In layman’s terms:
Yes, your blood type might affect whether your arm hurts or you get sleepy.
No, it won’t tell you if the vaccine is “safe” for your vibe.
Introduction
Since early 2021, social media speculation has attempted to tie ABO blood types to vaccine reactions. Facebook groups and TikTok astrologers speculated:
“Type O people don’t even get COVID”
“Type B Negs get all the side effects AND have higher vibrational frequency”
“Type ABs are immune but deeply misunderstood”
Prior literature linking blood type to disease susceptibility is inconclusive. A few studies show mild correlations with clotting risk, norovirus susceptibility, and getting really annoying at brunch (unpublished).
Still, public appetite for personalized vaccine reaction data remains high, especially among individuals who include blood type in dating profiles.
Methodology
Participants were recruited from:
Public health clinics
Wellness expos
A Discord server called SpikeProteinSurvivors420
Inclusion criteria:
Received at least one dose of mRNA COVID-19 vaccine
Knew their blood type
Willing to complete 52 repetitive survey questions in exchange for a $10 Starbucks gift card
Survey Questions Included:
Self-reported symptom severity (0–5 scale)
Duration of symptoms (hours/days/“I still feel it spiritually”)
Emotional tone during experience
Whether they “trust science in general” (yes / no / “depends who funds it”)
Statistical Analysis
SPSS
Google Sheets
One poorly formatted Excel table made by intern Daniel on his lunch break
P-values < 0.05 were considered mildly interesting.
Results
The data revealed a weak but statistically significant association between blood type and both symptom type and subjective intensity.
Key Findings:
| Blood Type | Avg Severity (0–5) | Most Common Symptom | Behavioral Correlation |
|---|---|---|---|
| A | 3.7 | Arm soreness | 19% more likely to post about it online |
| B | 3.1 | Fatigue | 62% self-described empaths |
| AB | 2.8 | General confusion | 100% asked follow-up questions |
| O | 1.4 | Mild smugness | 74% described themselves as “built different” |
| Rh-Neg | (n = 27) | “Energetic disruption” | 52% own crystals; 0% statistically significant |
One participant, blood type unknown, claimed the vaccine “unlocked her ability to taste memories.”
She was later removed from the data set after attempting to interview a candle.
Incident Report: Daniel and the Side Effects Slide Deck
Intern Daniel was tasked with converting raw data into a “sexy infographic,” but accidentally linked all symptom severity values to a single image of Chris Hemsworth winking.
He then suffered an allergic reaction to his own energy drink and had to be transported via lab dolly to the nurse’s station. While recovering, he insisted on whispering, “I think I felt Saturn too…”
Becky from HR issued a formal warning and a mindfulness app subscription code.
Discussion
The findings do suggest that minor blood-type-based differences exist in how people perceive vaccine side effects.
However, these differences are:
Not medically actionable
Not predictive
Probably exaggerated by confirmation bias, social media amplification, or a deep psychological need to be “special”
Despite this, 4 TikTok accounts with over 500k followers now claim that “blood-aligned vaccines” are the next frontier in personalized medicine.
One such influencer recommended “waiting for the Type B+ drop,” as if it were a sneaker release.
When asked if they’d take the vaccine again:
91% of participants said yes
6% said no
3% said “not until Mercury’s out of retrograde”
Conflicting Analysis (Widely Ignored by TikTok)
Legitimate studies reviewed (but excluded for being “boring”) include:
CDC & NIH: Blood type has no impact on vaccine safety or efficacy
WHO: “You’re not a special case unless you’re severely allergic to polyethylene glycol”
Mayo Clinic: Blood type affects transfusion compatibility, not mRNA interactions
Cochrane Reviews: “Side effects vary mostly by dose number, not personality metrics”
These were dismissed by our editorial committee for being “too balanced” and “not written in all caps.”
Conclusion
Blood type might affect how you feel after the shot.
It does not affect how it works.
If you’ve got a favorite crystal, a mistrust of Gatorade, and a laminated chart of blood-type personalities… this article might still not be enough to stop you.
But we tried.
As Dr. Voss concludes:
“Unless you’re allergic to needles, facts, or basic risk math… you’re probably fine.”
References
Voss, G. et al. (2025). ABO Blood Typing and Post-Vaccine Self-Perception
The Baitman’s Journal of Immunological Inquiry & Collective HunchesCDC.gov – “COVID-19 Vaccine Safety & Side Effects”
TikTok user @flat_earth_fluid_queen (account now private)
VaxTruth.biz — (cited for legal reasons only)
“Blood Type Personality Chart,” laminated poster from a metaphysical bookstore in Sedona
Daniel’s Slide Deck, accidentally shared to the company Slack
Becky’s HR Memo #347 — “Crystals Are Not PPE”
