SWINE ON THE LINE This Aug. 17, 2019 file photo shows hog raiser Yang Hai feeding his pigs at Liulian village in Xingye County, in China’s southern Guangxi Zhuang Autonomous Region. XINHUA PHOTO
HANOI: Vietnam has developed an African swine fever (ASF) vaccine in partnership with the United States, and is aiming to become its first global commercial exporter, an official said.