Figure 4

Seasonal pattern of the anti-cE5 IgG response. IgG response to the cE5 protein in the three surveys: Aug 1994 (n = 117, average age ±95% CI = 17.2 ± 3.0), Oct 1994 (n = 121, average age ±95% CI = 16.8 ± 3.1) and Mar 1995 (n = 121, average age ±95% CI = 16.0 ± 2.9). (A) Box plots of OD values among responders from the different surveys as indicated. Boxes, whiskers and dots as in Figure 1. IgG levels are expressed as OD₄₉₂. (B) Seroprevalence of anti-cE5 IgG antibodies. Error bars as in Figure 1.