Figure 2From: The correlation between the presence of viremia and clinical severity in patients with enterovirus 71 infection: a multi-center cohort study Distribution of the levels of EV71 viremia in blood samples grouped by days after disease onset. Day 1 indicates the first day of disease. The horizontal line presents the median viral load. Mann–Whitney U test was used for comparison between the serum viral loads sampled within and beyond three days after disease onset respectively.Back to article page