According to the epidemic characteristics, the degree of harm and the scope of coverage, the new plan divides the response to swine fever in Africa into four levels. Among them, especially significant (level I) refers to the continuous increase and rapid spread of new outbreaks throughout the country, with outbreaks occurring in most provinces within 21 days, posing a serious threat to the development of pig industry and economic and social operation. Major (Level II) refers to more than 5 provinces with epidemic areas concentrated and continuous within 21 days, and the epidemic has a further spread trend. Large (level III) refers to the outbreak in more than 2 and less than 5 provinces within 21 days. Generally (level IV) refers to the outbreak in one province within 21 days.
In response to the emergency response, the plan puts forward that if there is an epidemic situation, the competent animal husbandry and veterinary department at the county level in the place where it is located shall report to the peoples government at the same level for blockade of the epidemic area, and the local peoples Government shall issue a blockade order according to law. After confirming the epidemic situation, the competent animal husbandry and veterinary departments at or above the county level shall immediately delimit epidemic points, epidemic areas and threatened areas, carry out retrospective tracking and other emergency epidemiological investigations, put forward suggestions to the peoples government at the corresponding level to start emergency response, and the local peoples Government shall make a decision according to law.
In the epidemic area, all live pigs in the epidemic area shall be slaughtered in a timely manner according to law. All dead pigs, slaughtered pigs and their products shall be treated innocuously. Harmless treatment shall be carried out for excreta, kitchen waste, contaminated or possibly contaminated feed, bedding, sewage, etc.
Thoroughly clean and disinfect the objects, vehicles, utensils, pigsty and site environment that are or may be polluted, and take measures such as deratization, fly killing and mosquito killing. The entry and exit personnel, vehicles and relevant facilities and equipment shall be disinfected as required. At the same time, the access of susceptible animals and the transfer out of related products are prohibited.
According to the plan, African swine fever is mainly transmitted by contacting with African swine fever virus infected pigs or African swine fever virus pollutants, such as kitchen waste, feed, drinking water, pens, bedding grass, clothing, utensils, vehicles, etc. Digestive tract and respiratory tract are the most important routes of infection, which can also be transmitted by insect bites such as soft ticks.
Pigs and wild boars were highly susceptible to African swine fever, and there were no significant differences in breed, age and gender. Because of the different strains, hosts and infection routes, the incubation period is different, generally 5 to 19 days, up to 21 days.