Additional file 2. Supplementary data supporting results. Sheet 1. Relative Antibody Units (RAU) for individuals in the 12-month longitudinal cohort conducted in Thailand. Sheet 2. Relative Antibody Units (RAU) for individuals in the symptomatic cohort at time of infection and one-week post infection. Sheet 3. Relative Antibody Units (RAU) for individuals in the three negative control cohorts.