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Modified Cates plot: Number of cases of CIN2+ associated with HPV16/18 occurring in women who were all hrHPV DNA negative at baseline. 16 out of 1000 non‐vaccinated women developed the lesion (left) whereas fewer than one (0.2) out 1000 vaccinated women developed the lesion (right). Relative risk= 0.01 (95% CI: 0.01 to 0.05).
