English Abstract A cross-sectional serological survey involving 355
children was performed to study the immunogenicity of DPT-IPV vaccine and
measles vaccine under tropical conditions. The vaccines were used in the
EPI programme in three provinces in Burkina Faso, West-Africa. A two dose
regimen is followed for DPT-IPV. A very high percentage of the group of 179
twice vaccinated children was antibody positive. In the 176 non-vaccinated
children a substantial proportion had antibodies to polioviruses, most of
them only to one type. This appears to be a sensitive parameter for the
circulation of wild polio viruses in the environment.