Bubbles in Covid booster vials pose no risk: Swissmedic
Vials of the batch concerned contained bubbles after being removed from the fridge, Swissmedic said
Keystone
Swiss drugs regulator Swissmedic says there are no risks in connection with bubbles that appeared in vials of Covid-19 vaccine boosters retooled to target the Omicron variant of the coronavirus.
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Agência reguladora suiça procura bolhas em ampolas de reforço Covid
“Laboratory analysis of the vials did not reveal any indications of a specific problem with the vaccine,” Swissmedic stated on FridayExternal link, adding that: “There is no risk to people who have already been vaccinated.”
The regulator believes that pressure or temparature factors whilst preparing vaccines caused the bubbles.
Swissmedic had been informed by vaccination centres of the appearance of bubbles during the preparation of the updated vaccine from Pfizer and BioNTech targeting the original version of the coronavirus and the BA.1 Omicron variant that led to a record surge in cases last winter.
The batch concerned had contained bubbles after being removed from the fridge. The phenomenon was accentuated when the syringes were prepared several hours in advance.
Cantons and vaccination centres were informed as a precaution.
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