Pfs230 and Pfs48/45 antibody prevalence and concentration in relation to the duration of exposure to gametocytes during follow-up.

Antibody concentration (optical density, OD, in the ELISA) was adjusted for background reactivity by subtracting the OD without antigen; seropositive and seronegative individuals are included in the table.*Trend-test, p¥0.05>p