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Japan has reported a fresh contamination case involving Moderna's Covid-19 vaccine, the fourth such incident in less than a week, threatening to slow the country's sputtering inoculation campaign, Reuters reports.
Kanagawa prefecture said several black particles in one Moderna vaccine vial were found upon checking for foreign substances before its use, and it has put the rest of the lot on hold.
The prefecture said the vaccine's domestic distributor, Takeda Pharmaceutical Co Ltd, had collected the vial with the suspected contaminant and that about 3,790 people had already received shots from the same lot.
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