Transmission route of classical swine fever

Classical swine fever is an acute, febrile and contagious infectious disease. It is highly contagious and lethal and can occur all the year round. So what are the routes of transmission of classical swine fever?

I. the route of transmission of classical swine fever

1. Insect-borne transmission, classical swine fever virus can be transmitted by ticks, mosquitoes, mosquitoes, chelate flies and so on, and classical swine fever virus can reproduce in individual insects and maintain its activity for a long time.

two。 Infected domestic pigs and wild boars can be transmitted through fresh meat products, blood and semen, and can survive for up to 4-6 years under certain conditions, as well as through bacon, ham, and infected pig faeces.

3. In addition, feed contaminated by virus, blood feed, hogwash, water sources, appliances, clothing worn by farm staff, and air pollution near the farm are all potential sources of infection after the outbreak of the epidemic.

When African classical swine fever virus is infected through the air, it mainly enters the pig through the mouth and upper respiratory system, and the infection occurs in the nasopharynx or tonsil. the virus quickly spreads to the mandibular lymph nodes and spreads all over the body through lymph and blood.

After the outbreak of an epidemic in the farm, if the farmers do not report the epidemic, and if the enclosure has not been strictly disinfected, it may cause the nearby farm to spread through the air. We must pay attention to this point, heighten our vigilance and do a good job of prevention.

2. Characteristics of classical swine fever

Classical swine fever is an acute and contagious infectious disease of pigs, which is characterized by high fever, severe internal organ bleeding and high mortality, but it has no direct harm to human beings.

The disease only infects pigs under natural conditions, and is susceptible to pigs of different ages, genders, breeds and wild boars, and can occur all the year round. Diseased pigs are the main source of infection, feces and secretions of diseased pigs, dead pigs and organs and corpses, feed contaminated by blood, meat, viscera, waste water and waste of diseased pigs, drinking water can spread the virus, and classical swine fever is transmitted mainly through contact. infection through the digestive tract. In addition, sows infected with sick and attenuated strains can also infect the fetus vertically through the placenta, resulting in weak piglets, stillbirths, mummified fetuses and so on.

Classical swine fever should be found and reported in time, which is conducive to the safety of their own farms, so as to avoid the spread of large areas.