Aujezky disease

Question 1

Definition of aujezky free herd

Answer 1

• No infection for 2 years
• Epidemiological conditions (E.g. isolation, controlled movements, lab exams, records) (!!!)
• No vaccination
• Testing of all breeding sows & boars & representative sample of fattening pigs
• Insemination or naturally breeding with negative semen/boars

Question 2

Control of free status in case of aujezky disease on large scale holdings

Answer 2

o All boars: every 6 months
o Sows: 20-50% every 6 months
o Representative sample of fattening pigs

Question 3

Control of free status: regular tests in a Small holding:

Answer 3

o All boars & sows: every year

o 5% of pigs over 4 months

Question 4

If control of free status is positive

Answer 4

If positive or inconclusive
o Free status is suspended
o Official surveillance
o Suspicious clinical signs, pathological lesions: sample to the vet institute
o Repeated test in 14 days with bG-ELISA & VN
▪ Negative: restoration of free status
▪ Positive or inconclusive: killing, sample to the vet institute
• + all breeding animals over 6m are tested
o Virus, antigen or DNA is not detected from the killed animal + all test is negative:
restoration of free status
o Virus, antigen or DNA is detected from the killed animal or there is positive test:
elimination of the infected herd