Initial tests were conducted on pigs from Lobo, Batangas, that received the African Swine Fever (ASF) vaccine. This live attenuated vaccine, developed in Vietnam, aims to curb ASF, which has significantly impacted the country’s swine industry.

Initial results from the controlled vaccine administration indicated that while some pigs died post-vaccination, the majority remain in good health. PCR tests on the deceased pigs confirmed ASF infection. Since the live attenuated vaccine can also be detected by PCR, additional diagnostic tests are underway.

Assistant Secretary for Swine and Poultry Dr. Constante Palabrica reported that ELISA tests results are available. ELISA measures the immune response by detecting antibody levels. An increase in percentage blocking suggests stronger immunity. “The ELISA test results showed the presence of antibodies against ASF in some pigs, indicating they are building immunity. All remaining pigs are healthy and under close observation,” Asec Palabrica stated.

He also mentioned that DIVA tests are in progress. “The DIVA test distinguishes between vaccinated pigs and those infected with the field virus, which will help determine if the virus in the deceased pigs is linked to the vaccine or external sources.”

The DA emphasized that the vaccine is part of a broader ASF control strategy. Dr. Palabrica stressed the need for comprehensive measures. “Vaccination is crucial, but it must be accompanied by stringent biosecurity practices to prevent further outbreaks. Honest and timely reporting from farmers is essential for the program’s success.”

Agriculture Secretary Francisco P. Tiu Laurel, Jr. reaffirmed the government’s commitment to finding a long-term ASF solution and expressed optimism about the vaccine’s potential.

“These initial results are part of a broader effort to protect our swine population. We remain hopeful, but cooperation from all stakeholders is vital. Strict adherence to vaccination protocols and biosecurity measures is crucial,” he said.

The DA is committed to providing further updates as ongoing tests are completed and analyzed. The 30-day post-vaccination period is critical for assessing vaccine effectiveness and ensuring the health of the remaining pigs.