Covid-19: Why it's important to have both doses of the Pfizer vaccine

A Stuff article.

There is a lot riding on New Zealanders getting fully vaccinated against Covid-19 – with more freedoms on the horizon when all district health boards hit 90 per cent for double-doses.

But why is it important to have both?

Clinical immunologist Dr Maia Brewerton (Ngāti Porou, Ngāti Kahungunu) said protection against Delta is greatly decreased after just one dose.

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