The epidemic situation of African swine fever frequently made headlines in China's agriculture and food safety news, which not only caused a great sensation among farmers, but also caused a great sensation in the hearts of ordinary people. In fact, the public need not worry that African swine fever will not be transmitted to humans, and even if dead pork is eaten by mistake, it will not be life-threatening. What should be worried about is pig farmers, because once pigs come into contact with this African swine fever, they will get sick and cause huge economic losses. In fact, one thing that pig farmers can't understand is how African swine fever spread to China.

African swine fever is not "swine fever". Before the epidemic of African swine fever, traditional swine fever was the most worrying swine fever for pig farmers all over the world. Although the name is classic, the history of this swine fever is not long. It can even be seen as the revenge of the new world on the old world. 18 10 The first outbreak of classical swine fever occurred in the United States. This is a virus disease of swine in the New World. It spread to Europe in the 1920s of 19, broke out in France and Germany, and spread to the eastern end of Eurasia. Although in the next 100 years, human beings have developed a serum against this swine fever, but the traditional swine fever has not been completely eliminated, and there are still some sick pigs.

This African swine fever is not the same as swine fever, so when talking about this plague, we can't simply call it "swine fever" to avoid confusion with swine fever. It is worth mentioning that African swine fever virus was born in Africa, which is more commendable than Spanish flu and Hong Kong places of interest, and has nothing to do with place names. Like almost all virus pathogens, African swine fever virus enters sick pigs, builds its own "virus factory" by extracting useful substances from sick pig cells, produces more pathogens, and flows out of the body through body fluids, feces and so on. And continue to infect other healthy pigs, even spread through the air in a short distance.

Generally speaking, there are four ways to spread classical swine fever across borders: first, international trade and smuggling of pigs and their products; Second, pork and its products carried by international tourists; Third, kitchen leftovers on international vehicles; The fourth is the migration of wild boar. After the first case of African swine fever was discovered in China, an epidemiological investigation was carried out immediately. According to the current epidemiological investigation, there are several possible ways for African swine fever to be introduced into China. There are frequent personnel exchanges and goods trade between China and African countries, the price of pork is higher than that of neighboring countries, smuggling activities continue, the number and population density of wild boar in border areas are increasing, and the risk of infectious diseases is higher than that of other countries.