Swine fever is an acute, hyperpyretic and contagious disease, caused by swine fever viruses. Its incidence rate and death rate are both extremely high, and viruses can be transmitted at high speed. Immunization is the major measure to prevent swine fever. With the development of Chinese economy and increasing living standards of Chinese people, the demand for pork keeps growing accordingly. In 2012, the output volume of pork in China was 53.35 million tons, increasing by 5.6% YOY. The fattened volume of pigs in 2012 was 696.28 million, increasing by 5.2% YOY. With the expansion of the pig raising industry, …
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