1. Aujeszky-disease

2. Aujeszky’s disease, also known as pseudorabies, is caused by an alphaherpesvirus that infects the central nervous system and other organs, such as the respiratory tract, in a variety of mammals except humans and the tailless apes. It is associated primarily with pigs, the natural host, which remain latently infected following clinical recovery (except piglets under 2 weeks old, which die from encephalitis).

3. A diagnosis of Aujeszky’s disease is established by detecting the agent (virus isolation, polymerase chain reaction ), as well as by detecting a serological response in the live animal.

4. Alpha-herpesvirus
gene-deleted vaccine: prohibited in Hungary from 2006
test: gB/gE ELISA
neurological signs, respiratory signs, abortion
chronic symptomless carriers
eradication program
treatment of meat

5. free pig:
virus, antigen or DNA is not detected
gB-ELISA –
kept in free herd

6. infected pig:
clinical signs, pathological lesions + epidemiological link
virus, antigen or DNA detection
gB-ELISA +

7. suspected of being infected pig:
suspicious clinical signs, , pathological lesions
presence of virus, antigen or DNA is not excluded
contact with infected animal within 40 days or inseminated with infected semen

8. free herd: no infection for 2 years
epidemiological conditions (e.g. isolation, controlled movements, laboratory examinations, records) (!!!)
no vaccination
testing of all breeding sows and boars and representative sample of fattening pigs
insemination or natural breeding with negative semen/boars

9. free herd with vaccination:
no infection for 2 years (until 2006)
only gE gene-deleted vaccine
epidemiological conditions (e.g. isolation, controlled movements, laboratory examinations, records)
testing of all breeding sows and boars and representative sample of fattening pigs with gE-ELISA
insemination or natural breeding with negative semen/boars

10. infected herd: confirmed disease or infection movement restrictions
elimination of the herd until the end of production period (max. 7 months)
state compensation

11. control of free status: regular tests
large scale holding:
all boars: every 6 months
sows: 20-50% every 6 months
representative sample of fattening pigs
small holding:
all boars and sows: every year
5% of pigs over 4 months
artificial insemination centre: test every 6 months

12. If positive or inconclusive:
free status is suspended
official surveillance
suspicious clinical signs, , pathological lesions: sample to the veterinary institute

13. repeated test in 14 days with gB-ELISA and VN
negative: restoration of free status
positive or inconclusive: killing, sample to the veterinary institute
+ all breeding animals over 6 months are tested
virus, antigen or DNA is not detected from the killed animal
+ all test is negative: restoration of free status
virus, antigen or DNA is detected from the killed animal
or there is positive test: elimination of the infected herd

14. If epidemiological conditions (e. g
If epidemiological conditions (e.g. isolation, controlled movements, laboratory examinations, records) are not complied with: suspension of free status
+ control serological tests

15. wild boar: individual negative gB-ELISA test for breeding or further keeping
disease in other species: notification