IGHG3 and infection: After adjusting for the pre-treatment antibody levels, infection intensity at enrolment and albendazole treatment, the post-treatment boosts remained lower for the women first treated during pregnancy than those first treated after delivery, particularly significant for IgG3, IgG4 and IgM against SWA and for IgG1 and IgG2 against SEA (additional file 2).