Task: Answer Verification
Input (English): Question: Does an oral Aujeszky 's disease vaccine ( YS-400 ) induce neutralizing antibody in pigs?
Answer: Domestic pigs given the trial ADV bait vaccine exhibited no adverse effects and developed high VN titers against ADV, indicating that the YS-400 strain is safe and can prevent ADV infection in domestic pigs.
Output (English): yes