Dangerous viral infections (ASF, CSF, PRRS, etc.) are putting unprecedented pressure on food security in pig industry. In connection with the infectious threat, measures aimed at preventing the penetration of Suidae pathogens into new territories, as well as preventing their further rooting and spread, are of paramount importance. One of the effective preventive tools of the risk assessment system in the fight against especially dangerous animal diseases is zoning. The use of zoning makes it possible to contain the spread of the pathogen, minimize the imposed trade restrictions and, as a result, reduce economic losses. However, differences in the mechanisms for allocating zones and the lack of specific scientifically based recommendations on their size in a number of regulatory documents lead to the impossibility of uniformity of algorithms for implementing the zoning principle and makes it difficult to introduce the experience of foreign countries into domestic practice. This review describes the experience of using zoning in different countries to control the spread of the most significant viral diseases for swine breeding, and provides recommendations for possible zone sizes t
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