Fig. 3: Prevalence of elevated ALT or liver biopsies in the 90 days before a vaccine is compared to 90 days after a vaccine.

a The period 90 days before the first vaccine is compared to 90 days after the second vaccine. Prevalence of elevated ALT or liver biopsies are not calculated in the period between the first and second vaccine. The grey area between vaccine doses one and two indicates a 21-day interval. b If there were less than 180 days between two vaccination dates, ALT samples or liver biopsies did not contribute to the before period of the following vaccine and, thus prevalence of elevated ALT or liver biopsies could not be calculated for the following vaccine.