The vaccination regimen for the primary series in this age group consists of three 3-microgram doses over at least 11 weeks.

The first two doses should be administered three weeks apart, followed by a third dose to be administrated at least eight weeks after the second dose.

Clinical data, based on an ongoing trial conducted by Pfizer, showed that the immune response in young children with a three-dose primary series was comparable to that in adults aged 16 to 25 years who received two higher doses of 30 micrograms as the primary series vaccine

This is the second vaccine dose in Singapore for children; the first was Moderna’s two-dose Spikevax Covid-19, approved in August for children aged six months through five years.

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