Pfizer Vaccine: What The ‘Protection Decline’ Means For You

“Which vaccine did you get, AstraZeneca, Pfizer or Moderna?” Two years ago that sentence wouldn’t have made sense, but now it’s become an everyday talking point as people pledge their allegiance to their Covid jab. But is one variation of the vaccine better than another?

In the largest study of its kind, research teams from Oxford University and the Office for National Statistics analysed two and a half million Covid tests results to track vaccine effectiveness.

The Pfizer vaccine offers a greater level of protection against the Delta variant than the AstraZeneca jab, the researchers said, but its effectiveness does decline faster.

After four to five months, the level of protection offered by both vaccines is similar, with the AstraZeneca jab maintaining its effectiveness throughout the duration. There is insufficient data for Moderna, but the researchers say it is “almost certainly at least as good as the others”.

Here’s what the study results mean for you.

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