In the section on priority setting between diseases at the national level, we covered
many aspects of data requirements that are also important for comparing different
disease-intervention options. In this section, we focus on tools and methods for deciding
between different control strategies for diseases judged to be of high priority.
Four major steps generally are involved in determining the most appropriate,
technically feasible and economically sound control or intervention strategy. These are:
(1) scenario development, (2) quantification of the intervention options and their effects
in epidemiological and economic terms, (3) development of clear decision criteria, and
(4) ex post evaluation of the results of the decision-making process.