Fig. 5From: Haemophilus influenzae type b (Hib) seroprevalence in France: impact of vaccination schedulesDistribution of percentages of children under the age of 5 years who were vaccinated according to 2 + 1 or 3 + 1 schemes as indicated in the Figure. Sera achieved the threshold of 0.15 μg/ml of anti-PRP IgG are shown by the two curves at the top of the figure. Sera or the threshold of 1 μg/ml are shown in the lower of the figureBack to article page