policies and actions to eliminate a disease or minimize its effect; to reduce the incidence and/or prevalence of disease, disability, and premature death; to reduce the prevalence of disease precursors and risk factors in the population; and, if none of these is feasible, to retard the progress of incurable disease, inimese haiguseelsete seisundite varasele avastamisele suunatud tegevus ja meetmed haigestumise vältimiseks