Measures to prevent, control and eradicate BSE in EU: surveillance

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Measures to prevent, control and eradicate BSE in EU: surveillance
Measures to prevent, control and
eradicate BSE in EU: surveillance &
eradication
Dr. Martial PLANTADY
Legislative officer
DG SANCO – European Commission
BSE seminar
Beijing – 30/31 March 2011
Legal Framework
Articles 6, 11, 12 and 13 and Annexes
III and VII to Regulation (EC) Nº
999/2001
1
Main protective measures

Feed ban

Specific risk materials (SRM) removal

Surveillance and eradication measures
BSE Monitoring System
2
History surveillance in bovine animals
 March 1990: compulsory notification of BSE
 April 1998: epidemio-surveillance for all animal
TSEs
 June 2000: introduction of rapid post mortem
test in monitoring for BSE
 November 2000: Reinforcement of surveillance
 June 2001: full surveillance and testing
Objectives
 To collect epidemiological information:
assessment of BSE prevalence in the EU
 Additional measures to protect public
health: removal of infected animals from
the food chain and eradication measures
(culling)
 Evaluate the effect of the risk reducing
measures
3
Current BSE surveillance in EU
 Passive surveillance: examination of all animals
suspected of being infected by a TSE
 Active surveillance: Systematic monitoring using rapid
tests of animals at risk and in healthy animals
Active Surveillance
Monitoring of healthy animals
All bovine animals over 30 months* of age:
Subject to normal slaughter for human
consumption
Slaughtered in the context of a disease eradication
campaign
* 48 months for some MSs since 2009
4
Active Surveillance
Monitoring of Risk Animals
All bovine animals over 24 months* of age:
Subject to special emergency slaughtering
Showing symptoms of disease or of a disorder of
their general condition.
Fallen Stock/Dead on farm: animals that died or
were killed on farm
* 48 months for some MSs since 2009
Rapid tests used

Post-mortem

Evaluation according a strict protocol adopted
by the European food Safety Authority:
Laboratory evaluation and field trial

Recommendation
by
EFSA
performance of the rapid test

Inclusion in the list of rapid tests for use in
the EU surveillance programme
on
the
5
Let’s look back to 10 years of surveillance in the
European Union
Number of BSE tests performed in EU from 2001
to 2010
10.996.023 11.057.727
10.425.549
10.123.880
10.113.914 9.728.615 10.051.584
12.000.000
10.000.000
BSE tests
8.487.675
7.467.350
8.000.000
6.350.000
6.000.000
4.000.000
2.000.000
0
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
6
Number of BSE cases detected in EU from 2001
to 2010
2500
2167
BSE cases
2124
2000
1376
1500
865
1000
561
320
500
175
125
67
31
0
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
Evolution of the prevalence (ratio per 10 000
animals tested) of BSE positive cases in animals
tested the EU since 2001
3,00
BSE prevalence
2,55
2,50
2,04
2,00
1,25
1,50
0,78
1,00
0,55
0,32
0,50
0,18
0,12
0,09
0,05
0,00
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
7
Average age (in months) of BSE cases from
2001 to 2010
160
146
152
137
140
109
120
100
79,2
74
80
80
88,6
86,5
101
60
40
20
0
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
Number of BSE cases by year of birth
2000
1800
1600
1400
1200
1000
800
600
400
200
0
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
8
Number of BSE cases born after 1 January
2001 up to 31/12/2009
Born in:
Number of cases
2001
32
2002
14
2003
10
2004
4
2005
1
Total
61
BSE cases in young animals (< 30 months old)
EU:
Member State
Age (months)
Born in
Detected in
GERMANY
28
Sep-1998
Jan-2001
GERMANY
29
Aug-1998
Jan-2001
POLAND
28
Dec-2004
Apr - 2007
Age (months)
Born in
Detected in
23
Oct-2001
Oct-2003
Rest of the world:
Country
JAPAN
9
BSE monitoring in EU
European Commission
DG SANCO website:
http://ec.europa.eu/food/food/biosafety/tse_bse/monitoring_en.htm
Eradication of BSE
10
Main Components
 Compulsory notification of suspect cases
 Diagnostics for confirmation
 Epidemiological investigations
 Eradication measures
Notification: Sequence of events
 All suspect cases must be reported to
Competent Authority
 Animal and holding restricted
 BSE investigation: rule in/rule out
 If BSE cannot rule out, animal killed, sampled for
diagnostics
 HOLDING RESTRICTED UNTIL TEST RESULTS
KNOWN
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Diagnostics: confirmation
BSE must be confirmed by:
Immunohistochemistry
Immunoblotting
Fibril demonstration
Histopathology
Combination of 2 rapid tests
Epidemiology investigation
 Feed history
 Birth history
 Progeny history
 Cohort history
12
Eradication measures in the herd of origin
 Cohort cull
 Possible extension to related holdings
 All culled animals subject to BSE testing
Risk Reduction Measures at
slaughterhouse level
 Whole carcass destruction if positive
detected at slaughterhouse
 1 carcass before and 2 after the
positive one are condemned
 Eradication rules apply to herd of
origin
13
Is it working?
The purpose of these schemes is
 to exclude infected animals from food chain
 to establish good prevalence data, to monitor
BSE & effectiveness of measures
It is artificial to view these separately from other
BSE measures especially feed ban & SRM
Effectiveness parameters: overall incidence,
mean age of positive, BSE in younger animals
THANK YOU FOR YOUR
ATTENTION
14

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