Prevalence of classical swine fever virus in domestic pigs in South Korea: 1999-2011.
Transbound Emerg Dis
; 60(6): 546-51, 2013 Dec.
Article
in En
| MEDLINE
| ID: mdl-22925439
ABSTRACT
The major policy for eradication of classical swine fever (CSF) in South Korea has focused on the implementation of compulsory vaccination of the susceptible pig population. A vaccine strain of CSF virus, the LOM strain, is used to maintain high herd seroconversion, a practice complementary to the 'stamping-out policy' and restriction of animal movement during disease outbreaks. To survey for the prevalence of CSF in domestic pigs in South Korea over the past 13 years (1999-2011), we tested 4 193 782 and 1 162 645 samples for antibodies and antigens, respectively. Whereas seropositivity for CSF antibodies has been maintained at over 95% in the mainland, in Jeju Island, where no-vaccination has been administered since 1999, seroprevalence has been below 1% during the last 3 years of study (2009-2011). The highest number of outbreaks in South Korea occurred in 2002 and 2003; since then, outbreaks have decreased each year, with the last CSF outbreak recorded in 2009. No outbreaks have occurred during the past 3 years, and a high level of herd immunity has been maintained in the mainland pig population for 8 years; therefore, South Korea could now switch to a no-vaccination policy throughout the country. However, the constant threat of the re-emergence of the disease in the susceptible pig population should be the main consideration in planning and carrying out the last phase of the CSF eradication process.
Key words
Full text:
1
Collection:
01-internacional
Health context:
1_ASSA2030
/
2_ODS3
/
4_TD
Database:
MEDLINE
Main subject:
Disease Outbreaks
/
Sus scrofa
/
Classical Swine Fever
/
Classical Swine Fever Virus
Type of study:
Prevalence_studies
/
Risk_factors_studies
Limits:
Animals
Country/Region as subject:
Asia
Language:
En
Journal:
Transbound Emerg Dis
Year:
2013
Document type:
Article