新型コロナウイルスワクチン｜報道発表資料｜厚生労働省

This page is a press release from Japan's Ministry of Health, Labour and Welfare dated August 30, 2021, regarding a foreign object discovered in a Moderna COVID-19 vaccine vial at a vaccination site in Gunma Prefecture. One unopened vial contained a black particulate substance, causing suspension of the affected lot (Lot 3005236). Investigation results indicate the object is likely a rubber stopper fragment, a rare occurrence previously reported across multiple lots. The efficacy and safety of other vials in the same lot remain unaffected, and vaccination continuation is deemed unnecessary.