There is no feasible vaccine for African swine fever that has been patented and put on the market. This is a relatively arduous task and cannot be developed in a short time. It is very difficult.
African swine fever is an acute and severe infectious disease of pigs, with a fatality rate of up to 100. Due to the many transmission routes, prevention and control is not easy. Once the epidemic occurs, it will be difficult to eradicate it in a short time.
In the early stage of the disease: the sick pig coughs, and at the same time a small amount of clear nasal fluid flows out of the nostrils. In more serious cases, gray-white viscous or purulent nasal fluid flows out, breathing speeds up, and the body temperature, spirit, and diet are normal. In the middle stage of the disease: the sick pigs show obvious asthma and abdominal breathing, the number of breathing increases to 60-80 times/min, the cough is small and low, the loss of appetite is not obvious, and the body temperature rises slightly. In the later stage of the disease: the sick pig's asthma worsens, mouth breathing, breath sounds like bellows, dry or moist rales in the lungs during auscultation, cyanosis of the mucous membranes, loss of appetite or even death, weight loss, lack of energy, likes to lie down and is afraid of cold , and finally died of suffocation.
The development of African swine fever vaccines is a global problem. So far, no African swine fever vaccine has been approved for marketing internationally. Vaccine research and development is a very complex system engineering, especially the biosafety requirements of vaccines are very high. Although we have made a good start, there is still a long way to go to successfully develop a safe, effective and quality-controllable African swine fever vaccine.
However, 16 of the 18 sows and 15 pigs in Vietnam showed no abnormalities two months after being vaccinated, and some of the sows had given birth. Unvaccinated pigs were infected with African swine fever and died. African swine fever is an "enemy" that the whole world is fighting against. Whether it is our country or other countries, as long as a truly reliable African swine fever vaccine is developed, this will be great news for the global pig industry.