Reporton.

AHRI report No.44

Topic

Influence of Storage on the Efficacy of Lapinized Classical Swine Fever Vaccine

Department

Animal Health Research Institute, Council of Agriculture, Executive Yuan

Author

C. C. Hsieh*, H. Chiang, C. H. Tseng, C. C. Huang

Summary

Due to the great negative impact on the industry of animal husbandry in Taiwan caused by classical swine fever, our institute has already developed the lapinized hog cholera vaccine which has proven to be efficacious. However, in order to test whether the vaccine is still effective post-expiry date, we randomly selected three batches of vaccines that were intentionally held for about 0.5 to 1.5 years in the storage unit of a Quality Control laboratory. The efficacy of these vaccines was then tested by animal experiments after storage. The results of this study indicate that vaccines stored under standard conditions are still effective even when used 1 year past the expiration date.

Keyword

lapinized hog cholera vaccine, expiration date, efficacy