COVID Shot mRNA Detected in Placenta, Animal Study Shows mRNA Crossing to Fetus
Evidence continues to accumulate that COVID shot-derived mRNA does not remain confined to the injection site, with peer-reviewed studies detecting genetic material in the placenta and showing that it can cross from mother to baby.
A 2024 study published in the American Journal of Obstetrics and Gynecology (AJOG) reported detection of COVID vaccine mRNA in placental tissue. More recently, a 2025 peer-reviewed study in pregnant mice observed mRNA crossing the placenta and entering fetal circulation.
Together, the findings add to longstanding scientific and public debate surrounding biodistribution, pregnancy safety and informed consent.
Human Study: mRNA Detected in Placental Tissue
The AJOG study analyzed placental tissue, maternal blood and umbilical cord blood following maternal COVID shot administration.
Researchers reported:
• Detection of shot-derived mRNA in placental samples
• Presence of spike protein in placental tissue
• mRNA in cord blood largely degraded
• Placental samples showing comparatively less degradation
The study focused on molecular detection, not pregnancy outcomes. However, detection in placental tissue directly challenges early public assurances that injected mRNA would remain localized.
Animal Study: mRNA Crossing Observed
A separate 2025 study published in Molecular Therapy – Methods & Clinical Development examined Moderna’s mRNA-1273 shot in pregnant mice.
Researchers observed:
• Rapid entry of mRNA into maternal circulation
• mRNA crossing the placenta into fetal circulation
• Detection of mRNA in fetal tissues
• Translation into spike protein
• Immune responses in offspring after birth
Independent scientists reviewing the study emphasized that shot-derived mRNA was found to cross the placenta within hours, accumulate in fetal organs, translate into spike protein and remain detectable beyond initial circulation.
Why This Matters
Pregnant women in Canada were coerced to take the COVID shots under assurances that injected mRNA would remain localized and rapidly degrade.
These findings are resurfacing amid growing concern over Canada’s “ultra-low” fertility rate, where birth rates have fallen to historic lows.
As previously published by CHD Canada, the decline has raised urgent questions about potential biological, environmental and policy-related contributors that remain largely ignored by public officials.
Expert Commentary
Commenting on the animal study, McCullough Foundation epidemiologist Nicolas Hulscher stated:
“The ability of COVID-19 vaccine mRNA to cross the placenta and enter fetal tissues raises important safety questions that were not adequately studied before widespread use in pregnant women.”
Health Canada’s Position
Like the CDC in the United States, Health Canada and the Public Health Agency of Canada continue to maintain that COVID shots are “safe and effective” during pregnancy, citing observational data and post-market surveillance.
However, critics argue that emerging research, including studies detecting shot-derived mRNA in placental tissue and documenting placental transfer in animals, complicates those assurances.
They contend that molecular biodistribution findings warrant renewed scrutiny, particularly given the unique biological sensitivity of pregnancy and fetal development.
As such, calls are growing for Health Canada’s pregnancy recommendations to be halted immediately.
Detection vs. Demonstrated Harm
Neither study claims proof of clinical harm.
However, both challenge simplified narratives surrounding:
• Strict localization
• Immediate degradation
• Limited systemic distribution
They also underscore a core principle of medical ethics:
Informed consent requires disclosure of uncertainty — not just reassurance.
The Bottom Line
Peer-reviewed research now confirms that COVID shot mRNA can be detected in placental tissue and that placental transfer occurs in an animal model.
These findings do not establish causation or injury, but they reinforce calls for:
✔ Transparent scientific dialogue
✔ Continued independent research
✔ Honest risk communication
✔ Protection of informed consent
Especially where pregnancy and fetal development are concerned.
Sources:
American Journal of Obstetrics and Gynecology – Transplacental transmission of COVID-19 vaccine mRNA
Molecular Therapy – mRNA-1273 is placenta-permeable and immunogenic in the fetus
Nicolas Hulscher, Focal Points – Peer-Reviewed Study Confirms mRNA Injections Cross the Placenta and Reach the Fetus
CHD’s The Defender – COVID Vaccine mRNA Crosses Placenta in Mice, Raising Questions About Vaccine’s Safety for Pregnant Women
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