they are a lot of the time just small amounts of the illness so that your body can produce antibodies to defend against the full infection later
the bodies immune system tells the white blood cells to attack enemy bacteria (etc.) as the first response to the immune system's defense
The immune system
The immune system helps protect the body by removing bacteria and foreign bodies.
MMR is measles mumps and rubella. If you give a strain of measles to a child, it's immune system develops anti bodies that destroy the virus, the anti bodies will stay around for ever and the child will be immune to measles as the anti bodies will prevent the measles virus from spreading.
The planets or other cosmic objects are very different, not similar.
Vaccines are basically dead virus bodies which a doctor will inject into your blood stream so that your immune system will learn how to fight it
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Vaccines do not prevent infection. Vaccines prepare the immune system to fight infection by allowing the immune system to produce antibodies to a specific invading organism, kill it, and remember it in the future. In vaccines, this organism is often weakened or dead. If the invading organism is found by the immune system in the future following immunization, the immune system remembers it and produces the specific antibodies needed to kill it quickly.
Vaccines are given because they keep you from getting sick. They work by preparing your immune system to fight bacteria by themselves. A dead, or weak, strain of the bacteria is given to the body. Your immune system can then produce anti bodies to kill them. Your system can then remember how it did it. If you should get a virrulent strain in future, an effecient attack can then be launched automatically.
Vaccines stimulates the immune system to make antibodies
your body has white blood cells which are built up into a immune system these fight the diseases and vaccines boost the system.
No, there is no proof of that. It is thought that vaccines are good for the function of the immune system because they give it "exercise"; or at least they are not bad for the immune system. Some believe that if the immune system isn't triggered to respond to an antigen periodically, it will not function as well when a real antigen invades the body, in sort of a "use it or lose it" way. That may not actually happen in the immune system, but many body systems and parts do work that way.
The Immune System
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Vaccines have a minuscule amount of the disease, so your immune system can easily destroy it and then retain in the immune systems memory the best way to destroy it. That is how vaccines work. However if you have an immune deficiency disorder, or a weak immune system, the disease inside the vaccine has a tiny chance of surviving and reproducing causing the disease to infect you.
The immune system certainly does recognize germs and other foreign bodies. The immune system will then try to fight them off.
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