Shrimp Virus To Hit China’s Seafood Industry, Another Blow To Food Security

[Treyfish]

Shrimp Virus To Hit China’s Seafood Industry, Another Blow To Food Security
By Sally Ho Last updated Apr 16, 2020

Shrimp farmers in the southern Chinese province of Guangdong have reported outbreaks of Decapod iridescent virus 1 (Div1), a virus that affects shrimp populations.

The disease is not known to be harmful to humans, but can decimate shrimp in just a few days. Fears are now mounting about the potential of the virus to threaten the country’s shrimp industry, much like the African swine flu (ASF) crisis did to China’s pork supplies last year. The news comes amid heightened attention on the vulnerabilities and dangers of the current broken food system due to the coronavirus pandemic.

First detected back in 2014, Div1 has made a return earlier this year in February, infecting around a quarter of shrimp farms in Guangdong province, a key seafood producer region in China. The disease is not harmful to humans, but local farmers are now fearful that the infectiousness and lethality of the virus to shrimp will lead to mass deaths that parallel that of the African swine fever (ASF) crisis, which wiped out almost a quarter of global pork supplies, with China bearing the brunt of the shortage.

According to shrimp farmers in Guangdong, early signs of infection include when shrimp turn reddish in colour. Within a few days, shells of shrimp soften and they sink to the bottom of ponds... https://www.greenqueen.com.hk/shrimp...food-security/

[Pathfinder]

Decapod iridescent Virus 1 (DIV1) infection, Chinese Taipei

Information received on 09/07/2020 from Dr Wen-Jane Tu, Chief Veterinary Officer, Director General, Bureau of Animal and Plant Health Inspection and Quarantine, Council of Agriculture, Executive Yuan, Taipei, Chinese Taipei

Summary Report type Immediate notification Date of start of the event 18/05/2020 Date of confirmation of the event 20/05/2020 Report date 09/07/2020 Date submitted to OIE 09/07/2020 Reason for notification Emerging disease Morbidity 13 % Mortality 13 % Zoonotic impact No Causal agent Decapod iridescent virus 1 (DIV1) Serotype Pending

New outbreaks (16)

Outbreak 1 (2020-8) Jiadong Township, Pingtung County Date of start of the outbreak 18/05/2020 Outbreak status Resolved (13/06/2020) Epidemiological unit Pond Water type Fresh water Population type Farmed Production system Semi-closed Affected animals Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered redclaw crayfish (Cherax quadricarinatus) 0 % 0 % 60000 0 60000 0

Outbreak 2 (2020-3) Sanzhi District, New Taipei City Date of start of the outbreak 25/05/2020 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Pond Water type Brackish water Population type Farmed Production system Semi-closed Affected animals Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered whiteleg shrimp (Litopenaeus vannamei) 20 % 20 % 3400000 700000 700000 0 0

Outbreak 3 (2020-9) Ligang Township, Pingtung County Date of start of the outbreak 26/05/2020 Outbreak status Resolved (15/06/2020) Epidemiological unit Pond Water type Fresh water Population type Farmed Production system Semi-closed Affected animals Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered redclaw crayfish (Cherax quadricarinatus) 0 % 0 % 6000 0 6000 0

Outbreak 4 (2020-7) Tianliao District, Kaohsiung City Date of start of the outbreak 26/05/2020 Outbreak status Resolved (15/06/2020) Epidemiological unit Pond Water type Fresh water Population type Farmed Production system Semi-closed Affected animals Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered redclaw crayfish (Cherax quadricarinatus) 0 % 0 % 96 0 96 0

Outbreak 5 (2020-6) Citong Township, Yunlin County Date of start of the outbreak 27/05/2020 Outbreak status Resolved (16/06/2020) Epidemiological unit Pond Water type Fresh water Population type Farmed Production system Semi-closed Affected animals Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered redclaw crayfish (Cherax quadricarinatus) 0 % 0 % 905620 0 905620 0

Outbreak 6 (2020-4) Zhubei City, Hsinchu County Date of start of the outbreak 28/05/2020 Outbreak status Resolved (15/06/2020) Epidemiological unit Pond Water type Fresh water Population type Farmed Production system Semi-closed Affected animals Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered redclaw crayfish (Cherax quadricarinatus) 0 % 0 % 51240 0 51240

Outbreak 7 (2020-10) Ligang Township, Pingtung County Date of start of the outbreak 28/05/2020 Outbreak status Resolved (13/06/2020) Epidemiological unit Pond Water type Fresh water Population type Farmed Production system Semi-closed Affected animals Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered redclaw crayfish (Cherax quadricarinatus) 0 % 0 % 100 0 100 0

Outbreak 8 (2020-11) Jiuru Township, Pingtung County Date of start of the outbreak 28/05/2020 Outbreak status Resolved (16/06/2020) Epidemiological unit Pond Water type Fresh water Population type Farmed Production system Semi-closed Affected animals Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered redclaw crayfish (Cherax quadricarinatus) 0 % 0 % 1000000 0 1000000 0

Outbreak 9 (2020-12) Nanzhou Township, Pingtung County Date of start of the outbreak 29/05/2020 Outbreak status Resolved (18/06/2020) Epidemiological unit Pond Water type Fresh water Population type Farmed Production system Semi-closed Affected animals Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered redclaw crayfish (Cherax quadricarinatus) 0 % 0 % 1000000 0 1000000 0

Outbreak 10 (2020-5) Mingjian Township, Nantou County Date of start of the outbreak 29/05/2020 Outbreak status Resolved (19/06/2020) Epidemiological unit Pond Water type Fresh water Population type Farmed Production system Semi-closed Affected animals Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered redclaw crayfish (Cherax quadricarinatus) 0 % 0 % 4284 0 4284 0

Outbreak 11 (2020-13) Jiuru Township, Pingtung County Date of start of the outbreak 30/05/2020 Outbreak status Resolved (16/06/2020) Epidemiological unit Pond Water type Fresh water Population type Farmed Production system Semi-closed Affected animals Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered redclaw crayfish (Cherax quadricarinatus) 0 % 0 % 1000000 0 1000000 0

Outbreak 12 (2020-14) Jiuru Township, Pingtung County Date of start of the outbreak 01/06/2020 Outbreak status Resolved (20/06/2020) Epidemiological unit Pond Water type Fresh water Population type Farmed Production system Semi-closed Affected animals Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered redclaw crayfish (Cherax quadricarinatus) 0 % 0 % 310000 0 310000 0

Outbreak 13 (2020-15) Wujie Township, Yilan County Date of start of the outbreak 02/06/2020 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Pond Water type Brackish water Population type Farmed Production system Semi-closed Affected animals Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered whiteleg shrimp (Litopenaeus vannamei) 90 % 90 % 600000 540000 540000 0 0

Outbreak 14 (2020-16) Toucheng Township, Yilan County Date of start of the outbreak 02/06/2020 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Pond Water type Brackish water Population type Farmed Production system Semi-closed Affected animals Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered grass shrimp (Penaeus monodon) 20 % 20 % 100000 20000 20000 0 0

Outbreak 15 (2020-1) Sanzhi District, New Taipei City Date of start of the outbreak 03/06/2020 Outbreak status Resolved (24/06/2020) Epidemiological unit Pond Water type Fresh water Population type Farmed Production system Semi-closed Affected animals Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered redclaw crayfish (Cherax quadricarinatus) 0 % 0 % 15000 0 15000 0

Outbreak 16 (2020-2) Sanzhi District, New Taipei City Date of start of the outbreak 03/06/2020 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Pond Water type Brackish water Population type Farmed Production system Semi-closed Affected animals Species Morbidity Mortality Susceptible Cases Deaths Killed and disposed of Slaughtered whiteleg shrimp (Litopenaeus vannamei) 0 % 0 % 1000000 0 0 0

Summary of outbreaks Total outbreaks: 16 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered redclaw crayfish (Cherax quadricarinatus) 4352340 ** 0 4352340 0 whiteleg shrimp (Litopenaeus vannamei) 5000000 1240000 ** 1240000 0 0 grass shrimp (Penaeus monodon) 100000 20000 20000 0 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* redclaw crayfish (Cherax quadricarinatus) ** 0.00% ** ** whiteleg shrimp (Litopenaeus vannamei) ** 24.80% ** 24.80% grass shrimp (Penaeus monodon) 20.00% 20.00% 100.00% 20.00% *Removed from the susceptible population through death, destruction and/or slaughter **Not calculated because of missing information

Epidemiology Source of the outbreak(s) or origin of infection Unknown or inconclusive Epidemiological comments Active surveillance was conducted for 103 shrimp farms from May 8 to 21 in 2020, and one redclaw crayfish (Cherax quadricarinatus) farm was confirmed with positive reaction to nucleic acid of Decapod iridescent virus 1 (DIV1). Due to the first detection of DIV1 case in Chinese Taipei, the Council of Agriculture immediately initiated a comprehensive monitoring of whiteleg shrimp (Litopenaeus vannamei) , grass shrimp (Penaeus monodon), giant river prawn (Macrobrachium rosenbergii), crab and all crawfish farms. At the same time, 2 whiteleg shrimp (Litopenaeus vannamei) farms and 1 grass shrimp (Penaeus monodon) farm were also confirmed with DIV1 infection. Active surveillance is still ongoing, and any positive result will be included in follow-up reports. As of June 17 2020, 12 redclaw crayfish farms, 3 whiteleg shrimp farms and 1 grass shrimp farm were positive for DIV1.

Control measures Measures applied Disinfection / Disinfestation Screening Traceability Quarantine Surveillance outside containment and/or protection zone Official disposal of carcasses, by-products and waste Stamping out Control of vectors Vaccination permitted (if a vaccine exists) No treatment of affected animals Measures to be applied No other measures

Diagnostic test results Laboratory name and type Species Test Test date Result Animal Health Research Institute (National laboratory) grass shrimp (Penaeus monodon) gene sequencing 08/06/2020 Positive Animal Health Research Institute (National laboratory) grass shrimp (Penaeus monodon) polymerase chain reaction (PCR) 08/06/2020 Positive Animal Health Research Institute (National laboratory) grass shrimp (Penaeus monodon) real-time PCR 08/06/2020 Positive Animal Health Research Institute (National laboratory) redclaw crayfish (Cherax quadricarinatus) gene sequencing 04/06/2020 Positive Animal Health Research Institute (National laboratory) redclaw crayfish (Cherax quadricarinatus) gene sequencing 09/06/2020 Positive Animal Health Research Institute (National laboratory) redclaw crayfish (Cherax quadricarinatus) polymerase chain reaction (PCR) 20/05/2020 Positive Animal Health Research Institute (National laboratory) redclaw crayfish (Cherax quadricarinatus) polymerase chain reaction (PCR) 04/06/2020 Positive Animal Health Research Institute (National laboratory) redclaw crayfish (Cherax quadricarinatus) polymerase chain reaction (PCR) 09/06/2020 Positive Animal Health Research Institute (National laboratory) redclaw crayfish (Cherax quadricarinatus) real-time PCR 20/05/2020 Positive Animal Health Research Institute (National laboratory) redclaw crayfish (Cherax quadricarinatus) real-time PCR 04/06/2020 Positive Animal Health Research Institute (National laboratory) redclaw crayfish (Cherax quadricarinatus) real-time PCR 09/06/2020 Positive Animal Health Research Institute (National laboratory) whiteleg shrimp (Litopenaeus vannamei) gene sequencing 09/06/2020 Positive Animal Health Research Institute (National laboratory) whiteleg shrimp (Litopenaeus vannamei) polymerase chain reaction (PCR) 09/06/2020 Positive Animal Health Research Institute (National laboratory) whiteleg shrimp (Litopenaeus vannamei) real-time PCR 09/06/2020 Positive

Future Reporting The event is continuing. Weekly follow-up reports will be submitted.

...
https://www.oie.int/wahis_2/public/w...reportid=34902

[Shiloh]

Source: https://www.bloomberg.com/news/artic...d=economics-vp

U.S. Once Again Rebuffs China’s Attempt to Link Virus to Food
By Michael Hirtzer
and Mike Dorning
July 10, 2020, 12:59 PM EDT

There’s ‘no evidence that Covid-19’ transmits through food
China blocked some Ecuadorian imports after testing shrimp

China is making further moves to try to link the spread of coronavirus and food shipments. And yet again, U.S. officials are rebuffing the attempt, emphasizing what’s considered to be the established science on the matter -- that no proof of that link exists.

The U.S. Food and Drug Administration issued a fresh statement on the matter after China said samples of imported shrimp tested positive for the virus.

“We have no evidence that Covid-19, a respiratory virus, is transmitted through food or food packaging,” FDA spokesman Peter Cassell said in an email.

China has been stirring the pot over whether the pathogen can spread through food or frozen products, drawing the connection against the advice of global health experts and authorities.

Last month, the Asian country pointed to imported salmon as a possible culprit for Beijing’s fresh Covid-19 outbreak, sparking a boycott of the fish as supermarkets took the produce off their shelves. China also began mass testing of cold food imports at ports, and blocked shipments from meat plants abroad that reported infections among workers.

In the latest move, China halted imports from three Ecuadorian plants linked to the shrimp samples. The announcement created a new level of uncertainty in the global meat, poultry and seafood trade that further shipments or sales could be disrupted...

[bertrand789]

Coronavirus found on shrimp packaging from Ecuador, China suspends imports from 23 meat companies
https://news.cgtn.com/news/2020-07-1...w4M/index.html

So far, the GAC has suspended imports of products from 23 overseas meat companies. Many countries and companies are actively cooperating with China. The customs authority said that 10 of them had suspended their exports to China spontaneously according to Chinese requirements.

Seule la Chine fait cela , ou ?