Is it necessary to make a vaccine for bacterial disease?

Is it necessary to make a vaccine for bacterial disease? -- pay attention to classical swine fever, foot-and-mouth disease, typhoid and lung disease with you. Now it is not in line with the breeding situation at all. I suggest doing a good job of classical swine fever 2060 immunity, sows 3-4 times a year pseudorabies. Other vaccines depend on the breeding level, and if Streptococcus is more serious, you can consider doing it. Sows can consider being E. coli. Viral diseases depend on seedlings, while bacterial diseases depend on health care. Virus disease depends on seedlings, bacterial disease depends on health care, this is a good saying! I agree with the upstairs point of view. -- at present, there are still some people who only believe in drugs when they have a viral disease, resulting in heavy losses. Today, I saw a pig farm in Zhejiang Province. One month after the attack, 400 pigs weighing 2 or 30 jin died, that is, injections. Do not make a vaccine-bacteria generally have more serotypes, the effect of the vaccine is not accurate! Some response is good, some may not be good, the pig farm decides whether to do it or not depends on its own actual situation! -- for those who are prone to disease, it is necessary to do less vaccine, do regular disinfection in the pig farm, and clean it better. Be able to control-the virus vaccine still needs to be done! Agree with the bench that what needs to be done is still to be done.