An operational classification of disease prevention.

  • Gordon R
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These classes are summarily defined as primarypracticed
prior to the biologic origin of disease;
secondary-practiced after the disease can be recognized,
but before it has caused suffering and disability;
and tertiary-practiced after suffering or disability
have been experienced, in order to prevent further

propose preventive measures
I = universal = Health educ and immunization
II = selective = group at risk to be but perfectly well
III = indicated = suffering or hight risk people to avoid future problems

Universal measures are recommended for essentially everyone.
Selective measures are advisable for population subgroups distinguished by age, sex, occupation, or other evident characteristics, but who, on
individual examination, are perfectly well.
Indicated measures are those that should be applied only in the presence of a demonstrable condition that identifies the individual as being at higher than average risk for the future development of a disease.

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  • R S Gordon

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