An international consortium is evaluating the combinatorial effects of a number of childhood vaccines in Africa. The scope is to modify existing health policies so as to improve vaccination outcome.
Health interventions undertaken by the World Health Organisation or UNICEF in low income countries (LICs) are assessed based on certain performance indicators such as vaccination coverage. However, these indicators offer only an assumption about intervention efficacy and burden of disease and not the real-life impact on health. In addition, vaccines and micronutrients may have either beneficial or negative non-specific effects (NSE) and may interact with other interventions.
Further details:
http://cordis.europa.eu