Published Date: 2018-10-25 17:07:42
Subject: PRO/AH/EDR> Bluetongue - Europe (05): Portugal, ovine, serotype 4, OIE
Archive Number: 20181025.6111736
BLUETONGUE - EUROPE (05): PORTUGAL, OVINE, SEROTYPE 4, OIE
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Date: Tue 23 Oct 2018
Source: OIE, WAHID (World Animal Health Information Database), weekly disease information 2018; 31(43) [edited]
Information received [and dated] on 23 Oct 2018 from Dr Bernardo Fernando, Direcao Geral de Alimentacao e Veterinaria, Ministro da Agricultura, Florestas e Desenvolvimento Rural, Lisbon, Portugal
Report type: Immediate notification
Date of start of the event: 11 Oct 2018
Date of confirmation of the event: 15 Oct 2018
Reason for notification: recurrence of a listed disease
Date of previous occurrence: January 2017
Manifestation of disease: clinical disease
Causal agent: Bluetongue virus
Nature of diagnosis: suspicion, clinical, laboratory (advanced)
This event pertains to a defined zone within the country.
New outbreaks (1)
Summary of outbreaks:
Total outbreaks: 1
Outbreak location: Coruche, Dsvr De Lisboa E Vale Do Tejo
Date of start of the outbreak: 11 Oct 2017
Outbreak status: continuing (or date resolved not provided)
Epidemiological unit: farm
Total animals affected
Species / Susceptible / Cases / Deaths / Killed and disposed of / Slaughtered
Sheep / 12 / 1 / - / - / -
Affected population: Sample taken in the framework of a movement.
Outbreak statistics [rates apparent, expressed as percentages]
Species / Morbidity rate / Mortality rate / Case fatality rate / Proportion susceptible animals lost*
Sheep / 8.33 / ** / ** / **
*Removed from the susceptible population through death, destruction and/or slaughter
**Not calculated because of missing information
Source of the outbreak(s) or origin of infection: Unknown or inconclusive
Epidemiological comments: The last outbreak of Bluetongue virus serotype 1 (BTV1) was confirmed [9 Nov 2017]. The last outbreak of Bluetongue virus serotype 4 (BTV4) was confirmed in November 2013, therefore, it is considered to be a reoccurrence of the disease.
Measures applied: movement control inside the country; screening; traceability; control of wildlife reservoirs; zoning; disinfection; disinfestation; control of vectors; vector surveillance; vaccination permitted (if a vaccine exists); no treatment of affected animals
Measures to be applied: No other measures
Future Reporting: The event is continuing. Weekly follow-up reports will be submitted.
[The location of the outbreak can be seen on the interactive map included in the OIE report at the source URL above.]
["Bluetongue situation in the EU has considerably changed in recent times with incursions of new serotypes, namely of serotype 8 (in an area of the EU where outbreaks have never been reported before and which was not considered at risk of bluetongue) and also of serotype 1 of that virus on southern Europe.
"Council Directive 2000/75/EC (https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02000L0075-20130701) lays down control rules and measures to combat bluetongue in the EU, including the establishment of protection and surveillance zones and a ban on animals of the susceptible species leaving those zones. Exemptions from that ban may be decided by the Commission in accordance with the procedure provided for in that Directive. The demarcation of protection and surveillance zones must take account of geographical, administrative, ecological and epizootiological factors connected with bluetongue and of the control arrangements. In order to take account of those factors, it was deemed necessary to lay down rules as regards the minimum harmonised requirements for monitoring and surveillance of bluetongue in the Community.
"The list of restriction zones per bluetongue serotype that have been demarcated by the EU Member States can be found in the following table that shows the latest information regarding this issue. See table at https://ec.europa.eu/food/sites/food/files/animals/docs/ad_control-measures_bt_restrictedzones.pdf (Updated 10 Oct 2018)."
A map showing the location of the restriction zones is available at https://ec.europa.eu/food/sites/food/files/animals/docs/ad_control-measures_bt_restrictedzones-map.jpg (Updated 10 Oct 2018).
Source: https://ec.europa.eu/food/animals/animal-diseases/control-measures/bluetongue_en. - Mod.CRD
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