Caution: COVID-19 vaccine dosing & administration errors

Immunisation providers are advised to exercise caution especially when administering Moderna vaccines to avoid potential dosing errors and incorrect vaccine selection. Several vaccine administration errors (VAEs) have been reported since the roll-out of the Moderna Bivalent 18 years+ (Blue/Green) vaccine.

The correct dosage of Moderna Bivalent 18 years + vaccine is 0.50mL (rather than 0.25mL). The vaccine comes in 2.5mL vials, with 5 doses contained within each vial. Providers are strongly advised to use the COVID vaccine comparison poster to check dose and brand suitability.



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