In the present communication we analyzed the levels of IgG1,
IgG2, IgG3, IgG4 and IgE isotypes to soluble egg antigen of
by ELISA in individuals from an endemic area for schistosomiasis in Northeast
Brazil. The analysis was performed before and after treatment to evaluate
the age-dependent pattern, and to identify differences in the reactivities
to antigens. Our results suggest that schistosomiasis treatment would not
interfere with this sort of immune response.