Depending on against which disease is vaccinated, the vaccine is different. Of course, against any disease for which the medicine at all vaccination can, produced its own vaccine. The vaccine, called also vaccine consists of killed or attenuated pathogens to the specific disease. He is to activate the immune system so it can respond in an emergency, so when in contact with the “real” disease, the pathogen.
The natural reaction of the immune system, it is in contact with substances as dangerous perceived antibodies form against it. Depending on the disease, “remembers” the immune system, this reaction also for life. So it can react with each contact with the pathogens immediately and fend off the disease. With a vaccination can simulate this initial contact with the pathogens, so to speak. Attenuated or killed pathogens, for example of chickenpox or measles , are introduced into the body. They are alien to be recognized by the immune system as dangerous and fights. The body’s defense learns and remembers the pathogen to know how it can defeat them. The body is now immune to the disease, in the case of childhood illnesses keeps them immunity even a whole life long.
There is a distinction between live and inactivated vaccine. The drug contains live pathogens that can multiply still, but not cause disease. In very rare cases, however, the bacteria or viruses in the vaccine mutate into a form that can still cause a disease. That was the case with the polio oral vaccine, the case of a live vaccine was used. Therefore, it is now using an inactivated vaccine that is sprayed.
Inactivated vaccine containing killed pathogens or even distinctive parts, by which the immune system to recognize and antibodies may form. An inactivated vaccine can cause disease is not, but they are not as effective as live vaccines.
The Robert Koch Institute, where the Standing Committee on Vaccination is located advises of vaccination with live vaccine in women during pregnancy as in planned pregnancies also been three months earlier. Vaccination with inactivated vaccine in the second and third trimester of pregnancy and during breast-feeding problems. During the first trimester should be vaccinated only when strictly necessary.