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Bluetongue update

BTV-8 in France
 
  • France has continued to report cases of BTV-8 and the zones have increased.
  • In addition, the “seasonally free zone” status has been lifted in several regions.
  • There is a slight increase in area of the restriction zone towards the north but no significant
  • geographical spread of disease towards the north.
  • The risk to the UK is unchanged at present but we expect the situation to continue to evolve.
  • Further details :
Department for Environment, Food and Rural Affairs
Animal and Plant Health Agency
Veterinary & Science Policy Advice Team - International Disease Monitoring

Updated Situation Assessment No.5

Bluetongue virus (BTV-8) in France
15th April 2016 Ref: VITT/1200 BTV-8 in France

Disease Report

France has now reported a total of 240 outbreaks of BTV-8, which is 15 new outbreaks
and two new regions now affected: Averyron, Cher, Doubs, Haute Marne, Haute Saone
and Haute Savoie since our last update in March 2015 (OIE, 2016; see map). As a result,
the restriction zones have been increased in size again, towards the west of the country
with small increments in the northern reaches of the zones (Ministère de L’Agriculture
(FR), 2016). All the recent outbreaks are in cattle holdings, detected by surveillance
activities, not as reports of clinical disease in animals (either cattle or sheep). This
continues to support the evidence that BTV-8 presents with few clinical signs in cattle. The
“seasonally free zone” status of several regions has now been lifted as vector activity has
increased or as cases are detected.

Situation Assessment
There is no significant information to report except for the lifting of the “seasonally free
zone” status in several regions and the sporadic cases found in new regions. These could
still be the result of infection last year or movement of affected animals within the large
restriction zone which is allowed without vaccination. As the vector season progresses,
virus circulation, representing re-emergence of disease becomes more likely.
Conclusion
Our risk level remains the same. We will continue to monitor the current situation in France
and report any further updates from their Authorities.
Authors
Dr Helen Roberts
Jonathan Smith