Figure 4.

Estimated mean immunoglobulin G (IgG) responses to Entamoeba and Cryptosporidium antigens from serum specimens collected from Haitian children during dry and rainy seasons. Dry is January–March, Rain1 is April–July, and Rain2 is August–October. Shown are estimated mean IgG responses (MFI-bg) to Entamoeba histolytica LecA and Cryptosporidium parvum Cry17 and Cry27 antigens. Statistical analysis was performed by the generalized estimating equation method with negative binominal distribution to account for correlations from repeated measurements on the same child. The model adjusts for age of the children at the time of submission of the serum specimen. The asterisk indicates statistically higher estimated mean IgG responses to the LecA antigen (P = 0.04) from sera collected during the Rain2 season than from sera collected during the Dry season. A similar trend existed for the Cry17 and Cry27 antigens (P = 0.09 and P = 0.1, respectively).