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https://www.mhlw.go.jp/stf/newpage_34485.html

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保存期間の経過していない行政文書の廃棄について|厚生労働省

Saved at: April 10, 2026 at 03:32 PM

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保存期間の経過していない行政文書の廃棄について|厚生労働省

Saved at: July 12, 2026 at 04:22 PM

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This page announces that the Ministry of Health, Labour and Welfare inadvertently deleted approximately 11 million administrative documents before the required retention period expired. During COVID-19 quarantine measures, questionnaires, vaccination certificates, and other documents submitted by travelers were automatically deleted approximately one month after entry, though a minimum one-year retention period was mandated. The deletion was intended to protect personal information, but occurred due to insufficient recognition that the registered data constituted administrative documents. No actual harm resulted as quarantine procedures were already completed. The ministry has implemented preventive measures to ensure proper administrative document handling in future system implementations.

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このページは、厚生労働省が保存期間を過ぎていない行政文書を廃棄した事例についての報告です。新型コロナウイルス感染症の検疫に関連し、入国者から提出された約1100万件の文書が、自動削除されてしまったことが確認されました。これは、システムが登録データを行政文書として保存すべき期間を認識していなかったためで、再発防止策として、今後は職員への周知を徹底し、適正な扱いを確保することを明言しています。消除されたデータは、本人に不利益を及ぼすことはないとされています。

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厚生労働省広報基本指針
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