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Why do we need booster shots, and could we mix and match different COVID vaccines? – The Conversation AU

Giving smaller vaccine doses in multiple shots is often more effective than a larger single dose.

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The COVID vaccine rollout is now underway in Australia and around the world. Its incredible weve been able to develop and produce safe and effective vaccines so quickly but the current crop of vaccines might not protect us forever.
Fortunately, researchers are already developing and testing booster shots. So what are booster shots, and when might we need them?
First a prime, then a boost
The first time you give someone a dose of vaccine against a particular infection, its called a prime. Youre…

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