DoubleChecks

What was claimed

CDC data shows babies now dying at >50% excess rate years after mass mRNA vaccination of young women; linked to transgenerational effects where mRNA genetic material transfers to offspring; Mississippi declared public health emergency

Our verdict

Inaccurate

CDC data for 2022–2024 show infant mortality around 5.6 deaths per 1,000 live births with a small uptick in 2022 and then stable or slightly declining rates, not a >50% excess or spike. A 50% excess infant death rate would be a major deviation and is not reported in CDC official releases or major news coverage, which instead report relatively small changes and even a drop in 2024. Fact-check reporting that reviewed Mississippi’s public health emergency communications found no mention of concerns about COVID-19 vaccines or mRNA shots as a cause. The state’s emergency was not framed around a 50% excess infant mortality rate nor causally linked to maternal mRNA vaccination in official documents. (Only 2 of 3 AI systems responded.)

Combined assessment36 sourcesChecked Sep 9, 2026

Why this verdict

  • CDC data shows babies now dying at >50% excess rate years after mass mRNA vaccination of young women

    Incorrect
    All assessments reached this conclusion

  • Mississippi declared a public health emergency because babies are dying at >50% excess rate linked to maternal mRNA vaccination

    Incorrect
    One assessment reached this conclusion

  • Mississippi declared public health emergency

    Misleading
    One assessment reached this conclusion; one differed·Claude: Verified

  • CDC data show a >50% excess infant death rate among children born to mothers previously exposed to mRNA injections

    Misleading
    One assessment reached this conclusion

Evidence reviewed

36 sources

Perplexity and Claude sources are combined here.

cdc.govcdc.govfactcheck.afp.comstacks.cdc.govcdc.govrestoredcdc.orgcdc.govapnews.comthefocalpoints.comstacks.cdc.gov

Individual assessments

Assessment summary

  • Authoritative CDC and news data do not show a 50% excess infant death rate, nor link infant mortality to maternal mRNA vaccination.
  • There is no evidence of mRNA vaccine genetic material causing harmful transgenerational effects in humans or of Mississippi declaring a public health emergency for this reason.

Claims reviewed

CDC data shows babies now dying at >50% excess rate years after mass mRNA vaccination of young women

Incorrect
CDC data for 2022–2024 show infant mortality around 5.6 deaths per 1,000 live births with a small uptick in 2022 and then stable or slightly declining rates, not a >50% excess or spike.cdc.gov cdc.gov apnews.com cdc.gov A 50% excess infant death rate would be a major deviation and is not reported in CDC official releases or major news coverage, which instead report relatively small changes and even a drop in 2024.cdc.gov apnews.com

This claim may mislead readers without added context.

Mississippi declared a public health emergency because babies are dying at >50% excess rate linked to maternal mRNA vaccination

Incorrect
Fact-check reporting that reviewed Mississippi’s public health emergency communications found no mention of concerns about COVID-19 vaccines or mRNA shots as a cause.factcheck.afp.com The state’s emergency was not framed around a 50% excess infant mortality rate nor causally linked to maternal mRNA vaccination in official documents.factcheck.afp.com

This claim may mislead readers without added context.

The excess infant deaths are linked to transgenerational effects where mRNA genetic material transfers to offspring

Misleading
A mouse study shows that immune traits induced by an mRNA-LNP platform can be inherited by offspring in mice, but it does not show harmful transgenerational effects or transfer of vaccine mRNA genetic material in humans.pmc.ncbi.nlm.nih.gov Human data and CDC reports do not support a causal link between COVID-19 mRNA vaccination in parents and increased infant mortality, and fact-checkers note there is no evidence vaccines drive recent infant mortality changes.factcheck.afp.com cdc.gov

This claim may mislead readers without added context.

Assessment summary

  • The statement contains multiple significant factual errors.
  • CDC data shows no excess infant mortality spike—rates remained stable 2023-2024.
  • Scientific evidence directly contradicts the claim about mRNA genetic material transfer to offspring.
  • While Mississippi did declare a public health emergency, the statement misrepresents the causes and falsely links them to vaccination.

Claims reviewed

Babies now dying at >50% excess rate years after mass mRNA vaccination of young women

Incorrect
CDC data shows the U.S. infant mortality rate was 5.52 per 1,000 live births in 2024, not significantly different from 2023 (5.61). There is no evidence of a >50% excess death rate. National rates have remained stable.

This claim may mislead readers without added context.

mRNA genetic material transfers to offspring (transgenerational effects)

Incorrect
Multiple peer-reviewed studies found no evidence of mRNA vaccine products in maternal blood, placenta tissue, or cord blood. Only antibodies transfer to infants, not genetic material. The claim directly contradicts published research.

This claim may mislead readers without added context.

The emergency is linked to mRNA vaccination effects

Misleading
Mississippi health officials identified leading causes as congenital malformations, preterm birth, low birth weight, and SIDS—not vaccine-related issues. No causal link to mRNA vaccination is mentioned in any official statements or health department communications.

This claim may mislead readers without added context.

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