New China swine fever strains point to unlicensed vaccines
By Dominique Patton BEIJING (Reuters) - A new form of African swine fever identified in Chinese pig farms is most likely caused by illicit vaccines, industry insiders say, a fresh blow to the world's largest pork producer, still recovering from a devastating epidemic of the virus. Two new strains of African swine fever have infected more than 1,000 sows on several farms owned by New Hope Liuhe, China's fourth-largest producer, as well as pigs being fattened for the firm by contract farmers, said Yan Zhichun, the company's chief science officer. Though the strains, which are missing one or two ...