Retraction Watch

Journal retracts study linking hepatitis vaccine to autism that was included in CDC review

A toxicology journal has retracted a 16-year-old study linking hepatitis B vaccines to autism in children following an independent statistical review that found a half-dozen concerns with the study’s methodology.

Using data from the National Health Interview Survey, the authors claimed boys vaccinated in their first month of life had “threefold greater odds for autism diagnosis” than those vaccinated later or not at all.

The study was included in a rapid systematic review of hep B vaccine studies presented by John Su, director of the Immunization Safety Office for the Centers for Disease Control and Prevention, at the Sept. 18 meeting of the Advisory Committee on Immunization Practices. It resurfaced in a presentation at the Dec. 4 ACIP meeting, just before the committee’s decision to no longer recommend that infants receive the hep B vaccine at birth if the mother tests negative for the virus.

Journal retracts paper criticizing parental alienation theory after group threatens to sue

A humanities journal has retracted an article about the controversial theory of parental alienation after receiving legal threats from a group that supports the concept.

On May 19, the Integrated Journal for Research in Arts and Humanities (IJRAH) removed a review article by Robert Keith Head suggesting the theory of parental alienation is unsupported by research and fails “to meet basic validity requirements for psychological constructs.”

The move came after the Parental Alienation Study Group (PASG) — which describes itself as an international, nonprofit membership organization dedicated to the study and understanding of parental alienation — accused the journal of publishing “scientific fraud” and demanded the journal retract the paper or face legal action. The journal said the removal was not dictated by “external demands or threats” but followed a “comprehensive secondary evaluation” by its editorial board and independent psychometric experts who identified “critical methodological and structural flaws that undermined the paper’s scientific validity.”

Weekend reads: White House proposal prohibits federal funds for APCs; sleuths say Thermo Fisher doctored data; sleuth in China takes to social media

If your week flew by — we know ours did — catch up here with what you might have missed.

The week at Retraction Watch featured:

Critics of birdsong study fight to be named in Nature’s retraction
Elsevier retracts study tying sudden infant death syndrome to vaccinations
A researcher’s unusually high h-index gives a window into an expansive citation network
Under new framework, Vietnam researchers face bans and funding cuts for violating integrity rules
In what EIC calls an ‘honest mistake,’ journal approves paper without peer reviewing it

Also the deadline for our Ctrl-Z Award is this Sunday! This $2,500 award recognizes scientists who discover substantial errors in their published work and take meaningful steps to correct the scientific record. More details and nomination form here.

In case you missed the news, the Hijacked Journal Checker now has more than 400 entries. The Retraction Watch Database has over 65,000 retractions. Our list of COVID-19 retractions is up to 650, and our mass resignations list has more than 50 entries. We keep tabs on all this and more. If you value this work, please consider showing your support with a tax-deductible donation. Every dollar counts.

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Here’s what was happening elsewhere (some of these items may be paywalled, metered access, or require free registration to read):

In what EIC calls an ‘honest mistake,’ journal approves paper without peer reviewing it

For most researchers, having an article accepted comes with constructive feedback from editors and reviewers. But when a sociology researcher learned his article was accepted at a Taylor & Francis journal, he was surprised to find the journal had skipped the peer review process altogether.

Martino C. submitted his article on the effects of economic instability on political ideology in Slovakia to the journal Democracy and Security on October 15. (We’ve withheld the author’s last name at his request for digital privacy reasons.) He told Retraction Watch he was hoping peer reviews would help him improve his argument.

But on January 13, the paper was marked “Accepted” in the journal’s submission portal without feedback.

Vietnam researchers face bans and funding cuts for violating integrity rules

*Ton Duc Thang University*, *Ho Chi Minh City, Vietnam*

Researchers in Vietnam who fabricate data or plagiarize papers may be permanently barred from future scientific work, according to new guidance from the country’s Ministry of Science and Technology.

The new framework, announced May 25, requires science and technology organizations to implement rules against research misconduct, and it outlines a process for investigating and sanctioning violations. The recommended penalties include written warnings, correction or retraction requests, public apologies, role suspensions, returning research funding, and bans from scientific projects. Violations of scientific integrity must also be recorded in the National Digital Platform for Science, Technology, and Innovation Management, according to the framework.

Researchers who use artificial intelligence inappropriately may also be subject to stiff sanctions. The framework warns researchers should not use AI to create fake data, images, or references nor unverified AI-generated material used as a reference.

A researcher’s unusually high h-index gives a window into an expansive citation network

With an h-index of 75, computer scientist Thippa Reddy Gadekallu ranks among the world’s most highly cited researchers. But the speed and means of his ascent to those lofty heights of scholarship has been as remarkable as the achievement itself.

In less than a decade, Gadekallu, a professor at Zhejiang A&F University in China, has managed to bootstrap himself from scientific obscurity by collaborating with colleagues around the world who cite each other’s work in ways that have raised questions. In some years, Gadekallu received more citations than Yoshua Bengio, a pioneer in artificial intelligence and the top-rated computer scientist on Google Scholar.

Earlier work uncovered a network of reviewers on papers Gadekallu edited who frequently suggested adding citations to his work. A closer look by Retraction Watch shows the impact of that strategy on Gadekallu’s h-index, and reveals additional possible collaborators in the network.

Elsevier retracts study tying sudden infant death syndrome to vaccinations

Elsevier has retracted a 2021 study claiming sudden infant death syndrome is linked to vaccines over concerns the paper might influence patient care.

The single-author study, by longtime vaccine critic Neil Z. Miller and published in Toxicology Reports, found 75 percent of SIDS cases reported occurred within seven days of vaccination, suggesting the fatalities are tied to immunizations. In an April 9 notice, Elsevier said it initiated an investigation into the paper after concerns arose from readers about potential research errors and methodological flaws.

According to the removal notice, editor-in-chief Lawrence H. Lash determined the author’s response did not “satisfactorily address” the concerns, particularly, the “serious methodological flaws” in using the Vaccine Adverse Event Reporting System (VAERS) to infer a correlation between vaccination and SIDS.

Critics of birdsong study fight to be named in Nature’s retraction

A zebra finch in New South Wales, Australia. *Source: JJ Harrison/Wikimedia Commons (CC BY-SA 4.0)*

Researchers who flagged methodological issues in a paper on birdsong a year and a half before Nature retracted it say they should be credited in the editorial notice. But the editors have refused, with one telling the critics the paper was retracted for unrelated reasons.

The March 2024 study at the center of the dispute looked at how sexual selection may drive song patterns in male zebra finches. Nature retracted the paper last month because two of the synthetic song pairs used in the study were found to be unreliable, according to the notice. All three authors agreed to the retraction.

Todd Roberts, the paper’s corresponding author, told Retraction Watch the critics now asking for credit “prompted us to check the synthetic song pairs used in our paper.” He said his team did not do the reliability analysis of the pairs until after publication.

Weekend reads: arXiv to ban researchers with hallucinated references; U.S. restrictions on foreign coauthors; retracted papers by Max Planck

If your week flew by — we know ours did — catch up here with what you might have missed.

The week at Retraction Watch featured:

New rule in Peru restricts authors with retractions from getting special bonuses
‘Comically bad’ datasets used to train clinical models for stroke and diabetes
Feud between physicists ends in defamation verdict
How the media hypes “research that is absurd on its face”
Widely criticized keto diet study retracted

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Here’s what was happening elsewhere (some of these items may be paywalled, metered access, or require free registration to read):

Widely criticized keto diet study retracted

A 2025 paper claiming the keto diet does not promote the formation of arterial plaques has been retracted after widespread criticism of the study’s methods and claims. The journal found “the identified errors are too great to be corrected with a corrigendum,” according to the March 11 retraction notice.

In April 2025, JACC: Advances published the study, which looked at plaque build-up in 100 otherwise generally healthy people who had experienced an increase in their cholesterol levels while being on a keto diet. The study claimed scans performed one year apart by the company Cleerly showed the diet was not associated with the development of arterial plaques.

This finding went against what previous studies had found, and it led to what Wired called “a new war in the nutrition world.”

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