A review on White Spot Disease in penaeid ... - Middle East - OIE

Containment, Control & ZoningSimilar to Eradication, the feasibility of Containment ,Control and Zoning will depend on farmmanagement practices, the extent to which infection has already spread, and the location, distributionand migratory behavior of infected species.Measures for containment, control and zoning are similar to those for eradication, but will emphasizemanagement of the disease in individual facilities. Procedures may include:• Zoning to define infected and disease-free areas; A successful zoning strategy will rely on movementrestrictions on exposed or potentially exposed prawns to prevent infection spreading to uninfected zones.• Quarantine and movement controls or restrictions on shrimps, water and any other vectors (includingmaterials and equipment) within the infected zone and to free zones;• Eradication of outbreaks in the free zone where feasible;• Pond-level surveillance, with destruction and safe disposal of any clinically diseased shrimps in theinfected zone, followed by clean-up and disinfection;• Use of closed production systems;• WSSV testing of broodstock and post larvae;• Emphasis on high standards of hygiene (including drying of ponds before restocking and disinfection ofwater before either use or release) and biosecurity (use of crustacean-proof land barriers and water filtersand screening of incoming post larvae for WSSV);• Tracing and surveillance to determine the source and extent of infection; and• A public awareness campaign to encourage cooperation from industry and the community.-In containment, control and zoning strategy, grow-out of exposed or potentially exposed, but clinicallynormal shrimps will be a standard practice within infected zones. The likelihood of clinical disease will beminimized through appropriate farm management practices. Spread of the disease will be preventedthrough farms maintaining a high level of hygiene and biosecurity.