Blue injectable vaccine has a university question
2022-09-17 08:07:42
There are two types of PRRS vaccine, one is inactivated vaccine and the other is attenuated vaccine. In the end what kind of effect is good and when should it be injected to get good results?
The effect of injecting attenuated vaccines into the body is not much different from that of wild virus infection. Like wild boar, it crosses the placenta and invades the fetus. If the vaccine's genetic sequence is similar to the blue-ear virus gene sequence that exists in a certain population, the vaccine will be effective when it is 70% to 80%. If the gene sequence is different, it may trigger a new blue ear disease.
Inactivated vaccines have poor ability to induce effective immunity, but they are relatively safe to use and can induce certain antibody production. If the antibodies are similar to wild-type virus, they will produce better protection if the gene sequences are not similar. , then the protection is poor.
Therefore, the vaccine should be selected according to the different conditions of each farm. The safety of inactivated vaccines is much higher than that of attenuated vaccines, and there is no danger of drug spillage. However, the effect of the best inactivated vaccines cannot be compared with that of attenuated vaccines. Therefore, inactivated vaccines should be used for breeding pigs and positive fields, and attenuated vaccines with good immunity effect should be used in negative fields.
The effect of injecting attenuated vaccines into the body is not much different from that of wild virus infection. Like wild boar, it crosses the placenta and invades the fetus. If the vaccine's genetic sequence is similar to the blue-ear virus gene sequence that exists in a certain population, the vaccine will be effective when it is 70% to 80%. If the gene sequence is different, it may trigger a new blue ear disease.
Inactivated vaccines have poor ability to induce effective immunity, but they are relatively safe to use and can induce certain antibody production. If the antibodies are similar to wild-type virus, they will produce better protection if the gene sequences are not similar. , then the protection is poor.
Therefore, the vaccine should be selected according to the different conditions of each farm. The safety of inactivated vaccines is much higher than that of attenuated vaccines, and there is no danger of drug spillage. However, the effect of the best inactivated vaccines cannot be compared with that of attenuated vaccines. Therefore, inactivated vaccines should be used for breeding pigs and positive fields, and attenuated vaccines with good immunity effect should be used in negative fields.
Blackhead Suction Tool,Best Blackhead Remover,Electric Blackhead Remover,Best Blackhead Suction Remover
Shenzhen Jie Zhong Lian Investment Co., Ltd. , https://www.szmeizons.com