Takeda Pharmaceutical Co. said on Friday that "human error" caused metal contaminants to get into Moderna Inc. COVID-19 vaccine doses, leading to a recall.
Takeda, which imports and distributes the vaccine in Japan, and Moderna said in a new report that a Spanish manufacturer discovered contaminants in some vials in July, but supplies from the same production batch were allowed to be shipped to Japan.
Japanese authorities in August suspended the use of three batches of Moderna shots containing 1.63 million doses after being notified of the contamination. Moderna conducted an investigation in partnership with Takeda and Spanish manufacturer Rovi, which operates the plant where the contamination occurred.
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