Rovi explains how steel particles ended up in blocked Moderna vaccines

Rovi explains how steel particles ended up in blocked Moderna vaccines Credit: Pixabay

Rovi explains how steel particles ended up in blocked Moderna vaccines in Japan.

According to Rovi, they have been able to detect that the stainless steel particles that were discovered in batches of the Moderna vaccines manufactured in Spain, do not pose a risk to health.

According to the company there is no undue health risk to patients and the particles do not affect the risk-benefit profile of the vaccine negatively.

The investigation was undertaken by the US pharmaceutical company Moderna and Takeda. Rovi then sent the findings onto the Spanish Securities and Exchange Commission (CNMV).

According to the report which analyses the particles which were discovered in batch 3004667 of the vaccine, the most likely cause was metal parts rubbing together on the assembly line. This is thought to be due to them being incorrectly assembled.

As reported by 20 minutes, “It is believed, according to the firm, that this condition occurred during assembly of the line prior to the production of batch 3004667 and was the result of an incorrect alignment during a line change prior to the start of this batch.”

According to Rovi, this issue has only affected the batches that had been blocked and they have already taken measures to fix the problem and ensure that it does not happen again in the future.

The report stated that: “Stainless steel is commonly used in heart valves, joint replacements and metal sutures and staples. Therefore, injection of the particles identified in these batches in Japan is not expected to pose any increased medical risk.”


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Written by

Alex Glenn

Originally from the UK, Alex is based in Almeria and is a web reporter for The Euro Weekly News covering international and Spanish national news. Got a news story you want to share? Then get in touch at [email protected]


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