The existence of pockets of under-vaccinated persons has allowed outbreaks of disease in countries that have achieved high levels of vaccination coverage. A field-based methodology--GAPS (Geographic Assessment of Planning and Services)--was developed to predict, in advance of an immunization campaign, the sites of which are most likely to have a pocket of unvaccinated persons and then use this ...

This study investigated the influence of Study Questions as Advance Organizers on Students’ Academic Achievement and Retention in Secondary School Physics Mangu L. G. A., Plateau State. The research design is quasi experimental pretest, posttest non-equivalent group independent variables. total population students 1,094 with male 787 female 307 drawn from 11 secondary schools. sample consisted ...