# Presentation: 728460

## BSE: Surveillance,  in the United States

**BSE: Surveillance,  in the United States**

- Linda A. Detwiler
- Senior Staff Veterinarian
- USDA, APHIS, VS

## USDA  ACTIONS: Surveillance

**USDA  ACTIONS: Surveillance**

-  CNS Cases - farms, labs, slaughter
- "Downers" - nonambulatory, fallen stock

**Notes:**
These are broad categories of US surveillance.

VDL - State veterinary diagnostic labs

## Test Methodology

**Test Methodology**

- Histology
- Immunohistochemistry
- Western Blot
- New tests:
- Enfer (High throughput chemiluminescent ELISA - 3-4 hrs)
- Prionics (modified WB - 8 hrs)
- Biorad (Sandwich Immunoassay (3-4 hrs)
- All need brain

## BSE Surveillance: Total Bovine Brain Submission by State May 10, 1990 thru September 30, 2001

**BSE Surveillance: Total Bovine Brain Submission by State May 10, 1990 thru September 30, 2001**

- Source:  USDA, APHIS,NVSL

**Total = 16,803**

**1547**

**2027**

**2781**

**1528**

**825**

**381**

**629**

**343**

**144**

**221**

**257**

**403**

**117**

**189**

**213**

**287**

**265**

**139**

**NJ-371**

**63**

**VT-103**

**496**

**190**

**46**

**91**

**154**

**397**

**225**

**60**

**790**

**258**

**27**

**58**

**44**

**MD-78**

**238**

**40**

**NH-15**

**20**

**CT- 20**

**2**

**389**

**40**

**MA- 36**

**44**

**DE-3**

**50**

**145**

- 7

**Notes:**
Self-explanatory

## Slide 5

## BSE Surveillance
NVSL Bovine Brain Submissions FY 93-99

**BSE Surveillance**
**NVSL Bovine Brain Submissions FY 93-99**

**Total Submissions**

**412**

**495**

**465**

**584**

**855**

**731**

**993**

**651**

**266**

**223**

**199**

**Downers (fallen stock)**

**344**

**219**

**Notes:**
Bovine brains tested by NVSL.  Yellow are number examined histologically and red are number by immunohistochemistry.  NVSL attempts to test all submissions using both methods.

## NVSL BSE Surveillance
Bovine Brain Submissions    FY 00-01 (as of 9-30-01)

**NVSL BSE Surveillance**
**Bovine Brain Submissions    FY 00-01 (as of 9-30-01)**

**Total Submissions**

**"Downers" (fallen stock)**

**2309**

**1895**

**4464**

**4870**

**Notes:**
Same as previous slide. (couldn't fit it on same graph)

## US Regions for BSE Surveillance

**US Regions for BSE Surveillance**

**NW**

**C**

**SW**

**SC**

**SE**

**NC**

**NE**

**E**

**Notes:**
Surveillance of free ranging cervids.

## US Regional Goals for BSE Surveillance - FY 2001

**US Regional Goals for BSE Surveillance - FY 2001**

**564**

**466**

**734**

**644**

**606**

**462**

**312**

**766**

**Notes:**
Regional goals based on OIE standards as if each region were a country

## US Regional Goals for BSE Surveillance (2001)

**US Regional Goals for BSE Surveillance (2001)**

**REGION**

**GOAL**
**2x OIE goals**

**FY 2001***

**NW**

**564**

**669**

**SW**

**466**

**564**

**C**

**766**

**332**

**SC**

**734**

**872**

**NC**

**606**

**620**

**NE**

**462**

**805**

**E**

**312**

**401**

**SE**

**644**

**953**

- * as of September 30, 2001

## Increase of submissions

**Increase of submissions**

- Down cattle:
- aged; dairy vs. beef
- condemns at slaughter
- 3D/4D
- Renderers
- Remind VDLs to submit data

## Status of Cattle Imported into the US from the United Kingdom and Ireland (as of September 30, 2001)

**Status of Cattle Imported into the US from the United Kingdom and Ireland (as of September 30, 2001)**

**VT-3**

**Notes:**
Cattle remaining in the US from the UK.  Total of 496 were imported between 1980 and 1989.

## Status of Cattle Imported into the US from other European countries in 1996-97 (as of September 30, 2001)

**Status of Cattle Imported into the US from other European countries in 1996-97 (as of September 30, 2001)**

**1**

**3**

**2**

**Notes:**
Remaining cattle imported from other European countries not reporting BSE in indigenous cattle.  These are all under state quarantine and we have offered to purchase.

## Status of Cattle Imported into the US from Japan

**Status of Cattle Imported into the US from Japan**

- 56

- 9

- 18

**Notes:**
Remaining cattle imported from other European countries not reporting BSE in indigenous cattle.  These are all under state quarantine and we have offered to purchase.