Was H. Pylori ever mentioned in context of vaccine injuries

The short version: the evidence you retrieved does not mention H. pylori in the context of vaccine injury at all.

The 24 records you received cover H. pylori vaccine development, gastric cancer, gastritis, and eradication therapy. Not one of them discusses H. pylori as a consequence of vaccination, as a cofactor in vaccine injury, or as a mechanism linking a vaccine to a reported adverse event. The closest any record comes is a 2004 study on Anisakis allergy in dyspeptic patients, which explicitly states that no relationship was found between H. pylori infection and the allergic marker being studied [1]. That is a negative finding about a different question.

This silence is not proof that H. pylori has never been mentioned in vaccine-injury contexts. Outside this retrieval, there is a small body of case reports and mechanistic speculation: some researchers have proposed that vaccine-induced immune dysregulation could reactivate or alter the course of chronic H. pylori infection, and that H. pylori-driven inflammation might amplify post-vaccination autoimmune or gastrointestinal syndromes. But those are hypotheses, not established findings, and they are not represented in the records you were given.

My call: this retrieval cannot answer whether H. pylori has been mentioned in vaccine-injury literature, because the search did not surface that literature. The records here are entirely about H. pylori as a target of vaccination, not as a consequence of it. Confidence: not clear — the question is about a body of literature the retrieval did not sample.