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One vaccine dose isn’t enough to protect against the Delta variant, new research shows – Business Insider Australia

A single dose of Pfizer’s or AstraZeneca’s vaccines – both of which require two shots – was either weakly or not at all effective…

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Although vaccines work well against the Delta variant, the level of protection they offer seems to depend largely on whether you’ve completed your vaccination course. A study published Thursday in the journal Nature found that just a single dose of Pfizer’s…

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