Moderna is recalling 764,900 doses of its COVID-19 vaccine made by its contract manufacturer Rovi after a vial was found contaminated by a foreign body.
No safety issues have been identified, Moderna stressed, in relation to lots that were distributed in Norway, Poland, Portugal, Spain and Sweden in January.
The pharmaceutical giant said the contamination was found in just one vial, and it was recalling the whole lot out of “an abundance of caution”.
It did not disclose what was found in the vial.
Japanese authorities last year suspended the use of some doses of the vaccine, which Moderna later recalled, after an investigation found stainless steel contaminants in some vials.
Over 900 million doses of the Moderna COVID-19 vaccine have been administered worldwide to date.
Moderna said it did not believe the contamination posed a risk to other vials in the lot.
The news came on the same day that Shanghai announced a record 21,000 new cases and a third consecutive day of COVID testing as a lockdown of its 26 million people showed no sign of easing and Chinese cities tightened curbs – even in places with no recent infections.
India, meanwhile, said it will offer booster doses of COVID-19 vaccine to all adults from 10 April, although free third doses will be limited to frontline workers and those older than 60 who get them at government centres.
In Germany, Chancellor Olaf Scholz said he was disappointed the lower house of parliament voted against a COVID-19 vaccine mandate for people over 60, but would not launch a second attempt to push for a mandate.