Can we rely on NIMS (National Immunisation Management Service) figures?

Changing the total population estimate results in large swings in the estimate of ‘case’ rates in the unvaccinated. Given the inability to be accurate within a few percentage points, and the uncertainty about whether the inaccuracies are overestimating or underestimating the total, the differences between populations is not as informative as the trend in rates within each of the populations.

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