Fig. 3.

Deviations from the scheduled gap between doses, in months (dotted line indicates median deviation; red frames indicate invalid vaccinations requiring reimmunisation). The graphs present the proportions of vaccines administered at, before, or after the recommended age. Deviations from the schedule are categorised by the number of months before (negative numbers) or after (positive numbers) the recommended age. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)