What I gathered from this article email alert is the wide ranging impacts a disease could have on the nation.
For example, this one shrimp disease does not only call on bans on exports of all shrimp products, but also prohibited to import aquaculture inputs (artemia cysts and biomass, polychaetes, prebiotics and probiotics) and algae from these countries, and from those nations where this syndrome is present.
This is why each country remains vigilant to prevent diseases entering the country; and if it does, to detect and eradicate the disease at the earliest. This is the gist of biosecurity.
From: “Dr. David Scarfe”
Date: 8 September 2013 21:16:07 AWST
Subject: AquaVetMed e-News: Ecuador calls for OIE shrimp EMS/AHPNS listing
September 8, 2013
Shrimp disease requested to be included in OIE official list
Ecuador – The National Fisheries Institute (INP) of Ecuador requested the acute hepatopancreatic necrosis syndrome (AHPNS) to be included in the official list of diseases, infections and infestations of the World Organization for Animal Health(OIE). INP representatives claim that this inclusion can help to intensify an animal disease surveillance agent.
Institute delegates made this request during the 6th Meeting of the Inter-American Committee on Aquatic Animal Health, which was held on 22 and 23 August 2013, in Mérida, Mexico. After learning about the crisis faced by the Asian shrimp industry due to AHPNS, the Ecuadorian government took preventive measures in the country. Therefore, since 25 July it decided to ban imports of various live shrimp species at any stage of their life cycle, their products and by-products in all presentations from China, Vietnam, Thailand and Malaysia for a year.
According to the Ministerial Agreement No. 043, it is also prohibited to import aquaculture inputs (artemia cysts and biomass, polychaetes, prebiotics and probiotics) and algae from these countries, and from those nations where this syndrome is present. The INP will initiate a training campaign for the shrimp sector in order to take the necessary precautions.
The AHPNS emerged in 2010 in shrimp farms located in southern China and in Hainan Island, and in early 2011 it was seen in Vietnam and Malaysia, the Ministry of Agriculture, Livestock, Aquaculture and Fisheries (Magap) reported. The first signs of the disease may occur between 7 and 10 days after the pool stockings, and the mortality can reach 100 per cent in the first 30 days of culture.
See the source (http://www.agricultura.gob.ec/author/agricultura/page/2/) for more information.
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