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The claim

コロナワクチン、金属片入っていたけどスルー

Original review summary

The review says the claim that metal fragments in COVID-19 vaccines were ignored is false: affected vaccine lots were recalled, not overlooked. It reports that three lots totaling 1.62 million doses were withdrawn after contamination was found.[S1]

Additional context

In mid-August 2021, foreign material was found in unused vaccine containers at eight locations; the affected lots were recalled and the manufacturing cause was investigated. [S1]

Research date:

Sources and attribution

  1. [S1] 日本ファクトチェックセンター original review

    Original review · Retrieved October 16, 2026