Research Article

Import Risk Analysis of the Decapod Iridescent Virus 1 (DIV1) Applied in South Korea: Qualitative Risk Review and Institutional Improvement Plans

Table 9

Results of risk assessments and risk estimation.

UseEntry assessmentSummaryExposure assessmentSummaryIntegration of entry and exposure assessmentResult assessmentSummaryRisk estimation

Human consumptionLow(i) Major susceptible species such as frozen/refrigerated shrimp are currently quarantined, while crabs and crayfish have few completely susceptible speciesLow(i) There are fewer crayfish species in South Korea than shrimp and crab
(ii) There are unlikely to be used as ad feed or bait
(iii) Most frozen/refrigerated crayfish are imported as boil-cooked products (70% in the case of freshwater crayfish) or sold/consumed as special food ingredients with shells/organs intact (no processing waste)
Very lowModerateDirect(i) There is a high possibility that irreversible damage can be inflicted on shrimp farming, including such major sensitive species as whiteleg shrimp, giant river prawn
(ii) In the past, South Korea changed the major species of shrimp farming due to the outbreak of white spot syndrome
(iii) There is a high possibility of occurrence of a large number of deaths by causing diseases in Oriental river prawns, fleshy prawn, etc. that live in the nation’s water systems
(iv) In particular, DIV1 can spread by such vectors as Cladocera spp. or polychaetes, resulting in a fatal damage to natural water systems
Very low
OrnamentalLow(i) Live products for ornamental use are under quarantinedLow(i) Some of the large aquaria directly importing products with a quarantine area are managed by the National Fishery Products Quality Management Service to mandatorily have a carcass processing facility (Article 32 of the Aquatic Organism Disease Control Act)
(ii) There is a possibility of live aquatic animals escaping to the wild and the of unauthorized release by breeders
Very lowVery low
ResearchModerate(i) If infected tissue is imported from abroad, there is a possibility of multi-infection with DIV1
(ii) Exporting conducted following the submission of the aquaculture/study plan and implementation of quarantine (Article 25 of the Enforcement Regulations of the Aquatic Organism Disease Control Act)
Very low(i) Research institute’s self-inspections, systematic sample management, and waste treatment proceduresVery lowVery low
AquacultureLow(i) These are quarantined as they are imported live, and unlike those for other uses, all imports are subject to close inspectionVery low(i) Direct exposure to fish farms or hatcheries may occur, but as all are imported with the quarantine certificate issued by the exporting country attached and are subject to quarantine upon arrival in South Korea, exposure routes can be blockedVery lowIndirect(i) The entry of DIV1 into the nation can cause an increase in disease control costs, including surveillance and quarantine of farms
(ii) Korea exports about 1,400 tons of shrimp and shrimp products to 34 countries on average, and although the trade volume is not large, there is a possibility that South Korea’s image in relation to aquatic products may deteriorate, and it can negatively affect the nation’s overall trade of aquatic products
(iii) In the past, the news on the detection of white spot syndrome virus in shrimps in circulation had a major impact on shrimp consumption due to negative perceptions, and this is expected to have had a negative impact on the economy and consumption of local communities (local shrimp festival, etc.)
Very low
Nonhuman consumption (feed or bait)High(i) As these are imported without quarantine procedures, potential damage can be caused to various susceptible hosts as a DIV1 vectorHigh(i) Direct exposure of fish farms, hatcheries or natural water systems to DIV1 can occur
(ii) There is no separate regulation for the disposal of objects left after use.
(iii) It is difficult to expect a reduction in pathogenicity due to freezing and refrigeration
HighModerate