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If one were to draw a graph of vaccine coverage versus danger, it would be a linear progression, the greater the vaccine coverage, the less the dangers and the other way around, of course, we want to get to 90 % coverage, it is a tall order globally. If we get to 70 % and stay there, there will be many sporadic outbreaks which may overwhelm health services. Worse, it will create more chances for the virus to mutate and variants of concern to emerge.