• Doesn't that contradict the earlier gov explanation of spacing to 12 weeks to get more bag per buck. As well as the greater/stronger response.

  • No, it doesn't contradict anything. It's not an exact science, and it's not as simplistic as you describe.

    As you say, the longer you leave it between doses the greater/stronger the eventual response will be (up until a point), but it leaves more people with a lesser/lower response for longer (prior to the second dose). Having more people with a lesser/lower response for longer could lead to more deaths overall especially in the presence of a more dangerous variant.

    Without a more dangerous variant they'd probably be looking to get more 1st doses in rather than getting the 2nd doses in to the more vulnerable earlier.

    Also, ending up with a slightly lower response is going to be offset by the likelihood of 3rd (and subsequent) boosters that might be tweaked for any future variants/mutations.

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