58% of citations to retracted papers occur after retraction, and journals almost never flag the citing papers

A January 2025 analysis of citation data from Clarivate's Web of Science Core Collection found that 58.28% of all citations to retracted papers occurred after the retraction was issued. Some retracted papers actually received more citations post-retraction than pre-retraction. A separate study found that of 88 papers citing retracted work, 39 drew conclusions that would be substantially weakened if the retracted papers were removed from the analysis -- yet journals flagged only 4 of these 39 weakened studies. A 1998 JAMA investigation found that 94% of 299 citations to retracted articles in MEDLINE did not note the retraction, and decades later, the problem has barely improved. This is not an abstract bibliometric curiosity. When a retracted paper on Alzheimer's drug mechanisms continues to be cited as valid evidence in grant applications, clinical trials are designed around fabricated findings. When a retracted nutrition study is cited in dietary guidelines, public health policy is built on fraud. The citing authors are not malicious -- they simply have no practical way to know that a paper they read and cited has since been retracted. Google Scholar, PubMed, and most reference managers provide inconsistent or absent retraction notifications. A researcher building a literature review encounters the paper, sees it was published in a reputable journal, cites it, and moves on. The retraction notice exists as a separate publication that almost nobody reads. The structural failure is that the scholarly communication system treats publication and retraction as separate, disconnected events. There is no technical standard that propagates retraction status to every copy of a paper across every database, repository, and reference manager. Crossmark exists but is not universally implemented. Publishers have no obligation to notify authors who cited a retracted paper. The citing authors have no obligation to issue corrections. And journal editors reviewing new submissions have no automated tool that checks whether any of the references in a manuscript have been retracted. The entire chain from retraction to downstream correction is manual, voluntary, and therefore almost never completed.