Recurrence of Bluetongue in the Former Yugoslavia Republic of Macedonia

 
Figure 1. Outbreaks distribution of Bluetongue in FYROM, July 2020. WAHID-OIE: 2020

 

On 10 July 2020, Dr Zoran Atanasov, Director of Food and Veterinary Agency, North Macedonia, Skopje, Former Yugoslavia Republic of Macedonia, notified to the OIE the recurrence of Bluetongue disease, serotype 4, in Greschnica, Makedosni Brod.

 

The date of start of the event was on 5 July 2020 and the outbreak was confirmed on 9 July 2020.

 

Moreover, new outbreaks occurred in other area. In total 9 outbreaks of Bluetongue serotype 4 were reported in the following municipalities: Gostivar (5 outbreaks),

Resen (2 outbreaks),

Ohrid (1 outbreak),

Skopje (1 outbreak). (Figure 1).

 

 

Today, 20/07/2020, out of 4867 susceptible animals, a total of 34 sheep-goats cases were reported and only one animal died.

 

The event is continuing and weekly follow-up reports will be submitted; the source of the outbreaks or origin of infection is unknown.

 

After reporting to the official veterinarian that there were animals with clinical signs of bluetongue, samples were taken from all animals with clinical signs.  The National Laboratory under the Faculty of Veterinary Medicine, Skopje, confirmed the positivity of 34 animals (sheep and goats) by real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) test.

 

As Bluetongue was confirmed in 2014 on the farm in Greshnica, the National Laboratory is sequencing and comparing current strain with the strain that occurred in 2014.

 

The control measures applied are: movement control inside the country, quarantine, zoning, disinfection, disinfestation, control of vectors, vaccination is prohibited; there isn’t treatment of affected animals.
Measures to be applied: vector surveillance.

 

According to OIE reports, the affected population is mixed and includes sheep and goats. However, the epidemiological data do not differentiate between them.

 

"BTV-4 (as most other BTV serotypes) rarely causes clinical signs in goats; sheep, and in particular European mutton breeds as well as other susceptible sheep breeds (for example, Chios), may be seriously affected, with mortality that may, in some cases, exceed 20% to 30%". (1)
It would be interesting to note which breeds of sheep have been exposed and to know whether goats are included among these cases and the death recorded in these flocks. If when vaccination is applied, goats will not be vaccinated
. (1)

 

 

 

 

Reference

 

1 ProMED-mail posting

 

 

 

 

Source: OIE

 

 

 

 

 

 

 

 

 
 
 
© IZSAM July 2020
 
 
 
 
 
 
 

Istituto Zooprofilattico Sperimentale

dell'Abruzzo e del Molise "G. Caporale"

 

Campo Boario | 64100 TERAMO | ITALIA

Telefono 0039.0861.3321 | Fax 0039.0861.332251

e-mail: archivioeprotocollo@izs.it

Posta elettronica certificata: protocollo@pec.izs.it

Partita IVA: 00060330677

Codice Fiscale: 80006470670