Age variation of the IgG response to gSG6, fSG6 or their combination. Age distribution of IgG levels and prevalence to the different antigens. Data from the three different surveys were pooled together. Age groups are indicated at the bottom. (Top) Box plot of OD values among responders to the different antigens. The number of responders (n) was as follows: ga (1-10, n = 66; 10-25, n = 60; >25, n = 33); fu (1-10, n = 62; 10-25, n = 52; >25, n = 31); ga+fu (1-10, n = 69; 10-25, n = 61; >25, n = 37). Box plots, whiskers, dots and p values as in Figure 3. (Bottom) Seroprevalence to the different antigens according to age. Number of individuals (n) was as follows: 1-10, n = 119; 10-25, n = 110; >25, n = 97. Whiskers and p values as in Figure 3.