http://www.newsweek.com/moderna-vaccine-recall-contamination-stainless-steel-human-error-takeda-covid-1634598

Human error was the cause of steel contamination discovered in some Spanish-made Moderna vaccine doses earlier this year, a report has found.

In August, authorities in Japan ordered that three batches of Moderna shots, equivalent to about 1.6 million doses, would have to be recalled because particles of stainless steel were discovered inside.