Pfizer booster: why we need a third dose of the vaccine

By Ellen Phiddian
November 4 2021 - 8:30pm
A third dose of the Pfizer vaccine for people aged over 18 has been giving the provisional go-ahead. Picture: Shutterstock.

The Therapeutic Goods Administration has provisionally approved a third dose of the Pfizer vaccine for people aged over 18, administered six months after they receive the first two doses. This "booster dose" is designed to improve immunity to COVID-19.

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