The Food and Drug Administration (FDA) has blocked the publication of certain studies that monitored the safety of both COVID-19 vaccines and shingles vaccines, according to reporting from ABC News and The Hill. An official speaking for the U.S. Department of Health and Human Services told ABC News that the FDA prevented the studies from being published. The Hill reports that the department’s spokesperson, Andrew Nixon, confirmed that the FDA stopped publication of the safety studies in recent months. Nixon said the studies were withdrawn because the authors reached broad conclusions that were not supported by the underlying data. Both accounts describe the action as being related to vaccine safety research tracking and the FDA’s decision to halt publication of those findings. The reports do not provide detailed information on the specific studies or the full scope of the safety outcomes covered, but they agree on the central point: the FDA’s intervention results in the withdrawal or blocking of publication for research described as assessing the vaccines’ safety. The FDA’s stated rationale is that the conclusions do not align with the data presented in the studies.