The Wilson and Jungner criteria for screening include: the condition should be an important health problem, there should be an accepted treatment, facilities for diagnosis and treatment should be available, there should be a recognizable latent or early symptomatic stage, there should be a suitable test, the test should be acceptable to the population, the natural history of the disease should be adequately understood, there should be an agreed policy on whom to treat, the cost of case-finding should be economically balanced in relation to possible expenditure on medical care as a whole, and case-finding should be a continuing process. High prevalence is not a mandatory criterion, although it often influences the cost-effectiveness and feasibility of a screening program.
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