Figure 1
From: Profiling of humoral immune responses to norovirus in children across Europe

Genotype and genogroup-specific IgG and IgA responses. (a) IgG and (c) IgA seroprevalence in four age groups against norovirus P particles representing the human norovirus diversity. The total seroprevalence for GI and GII is also shown (dark bars). Sera with an antibody titer > 40 were considered positive. (b) IgG and (d) IgA immunodominant response sera were defined as having an antibody response against one P particle ≥ 4-fold higher than against the other genotypes. The genotypes most commonly reported in NoroNet during outbreaks are marked with a pattern. *Marks antigens that were not spotted. In bold are the porcine genotypes.