Brazil reports atypical case of mad cow disease: ministry

[Shiloh]

Source: https://www.reuters.com/article/us-b...-idUSKCN1T12M0

May 31, 2019 / 5:37 PM / Updated a day ago
Brazil reports atypical case of mad cow disease: ministry

SAO PAULO (Reuters) - The Brazilian government reported on Friday a case of atypical mad cow disease in an animal in Mato Grosso state, according to a statement from the country?s Agriculture Ministry.

The ministry said the case of mad cow disease, or bovine spongiform encephalopathy (BSE), was detected in a 17-year-old cow. It said it collected the necessary material for tests and incinerated all other parts of the cow.

?No part of the animal entered the food chain, there are no risks for the population,? the statement said.

The case was considered ?atypical? as the animal contracted the BSE protein spontaneously, rather than through the feed supply. Classical cases of mad cow are caused when cattle are fed brain or spinal tissue of other ruminants, which is now forbidden in nearly all beef producing countries including Brazil...

[Pathfinder]

Bovine spongiform encephalopathy, Brazil

Information received on 31/05/2019 from Dr Geraldo Marcos De Moraes, Director, Departamento de Salud Animal e Insumos Pecuarios, Ministerio de Agricultura,Ganader?a y Abastecimiento, Brasilia , Brazil

Summary Report type Immediate notification (Final report) Date of start of the event 05/04/2019 Date of confirmation of the event 31/05/2019 Report date 31/05/2019 Date submitted to OIE 31/05/2019 Date event resolved 05/04/2019 Reason for notification Recurrence of a listed disease Date of previous occurrence 02/05/2014 Manifestation of disease Sub-clinical infection Causal agent Prion (atypical H-type BSE) Nature of diagnosis Laboratory (advanced) This event pertains to the whole country

New outbreaks (1)

Outbreak 1 Nova Cana? do Norte, Mato Grosso Date of start of the outbreak 05/04/2019 Outbreak status Resolved (05/04/2019) Epidemiological unit Farm Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Cattle 22794 1 0 1 0 Affected population A 17-year-old beef cow - nelore breed. The animal was born and raised on a full-cycle beef farm on extensive grazing.

Summary of outbreaks Total outbreaks: 1 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Cattle 22794 1 0 1 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Cattle 0.00% 0.00% 0.00% 0.00% *Removed from the susceptible population through death, destruction and/or slaughter

Epidemiology Source of the outbreak(s) or origin of infection Unknown or inconclusive Epidemiological comments As part of the Brazilian surveillance system for Bovine Spongiform Encephalopathy (BSE), a 17-year-old beef cow that was found fallen during an ante-mortem inspection at slaughter was confirmed as a case of 'atypical BSE', classified as H-type. After screening tests performed by the National Laboratory of Pernambuco LFDA/PE indicated the presence of prion antigens, the samples were sent to CFIA's OIE BSE reference laboratory in Lethbridge, Alberta, and the confirmation diagnostic test was concluded on 31 May 2019. This is the third case of 'atypical BSE' identified in more than 20 years of surveillance in Brasil. The last case has been detected in 2014. Specified Risk Material was duly removed and incinerated at the slaughterhouse. Meat and other products from this animal did not enter the food chain and pose no risk for human and ruminants populations. According to the OIE Terrestrial Code, for the purposes of official BSE risk status recognition, 'atypical BSE' is a condition believed to occur spontaneously in all cattle populations at a very low rate. Therefore, this event does not have any influence on official BSE risk status recognition of Brasil. This investigation was concluded.

Control measures Measures applied Screening Traceability Quarantine Official disposal of carcasses, by-products and waste Selective killing and disposal 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 Laborat?rios Federais de Defesa Agropecu?ria - LFDA Pernambuco (National laboratory) Cattle enzyme-linked immunosorbent assay (ELISA) 13/05/2019 Positive CFIA's laboratory in Lethbridge, Alberta, Canada (OIE Reference Laboratory) Cattle enzyme-linked immunosorbent assay (ELISA) 31/05/2019 Positive CFIA's laboratory in Lethbridge, Alberta, Canada (OIE Reference Laboratory) Cattle western blot 31/05/2019 Positive

Future Reporting The event is resolved. No more reports will be submitted.

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http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=30678