General Guidelines for Risk Analysis Relative to Veterinary Services
Definition of a Region
The APHIS policy now recognizes that, for the purpose of evaluating disease
risk, a region may be defined as any geographic land area that can be identified
by geological, political, or surveyed boundaries. In other words, within a single
country there may be many regions that have different risk characteristics
necessitating the imposition of different import requirements.
Countries typically have been classified as disease-free or affected.
In some cases, however, where a disease agent may exist in close proximity to an otherwise
free country or where the import practices of the country in question suggest a
slightly higher level of risk, a modified-free designation has been assigned.
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