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Epidemic situation of swine fever
According to our testing data, swine fever is currently in an unstable state; The C strain of swine fever belongs to type 1, and currently most of the prevalent strains in China are type 2.1. The virus carrying rate of breeding pigs has always been relatively high, and currently the swine fever is showing an unstable state.
The main manifestations are:
1. Strain variation.
2. Breeding pigs carry the virus and spread it to form tolerance to swine fever.
Some pig farms encounter the problem of repeatedly receiving anti swine fever vaccines without antibodies?
If the sow carries the virus, the piglet's immune system will recognize the pathogen as its own substance and will not respond. When vaccinated again after birth, there may be a lack of response. This type of swine fever is generally mild.
If sows receive excessive doses of vaccine during late pregnancy, it may lead to vaccine tolerance in piglets.
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