Vaccinations also protect future generations because once a child has been vaccinated properly, he/she might be immune from many diseases for his entire life and because of his good health, will probably have very healthy children who might have gained immunity from their parents. However, no matter how healthy a child might seem to be, it is prudent to have the child vaccinated and not take any undue chances with the life and health of the child. Before vaccines were invented by scientists, the mortality rate among children was quite high. Vaccines have eliminated childhood diseases in most parts of the world, but there is always the possibility of recurrence by a stronger virus that can again threaten the health of children.
Children that have health issues should avoid some vaccines or should take then when they are older and stronger. This applies to children suffering from any type of cancer or leukemia or those that need to take steroids because they have lung and kidney problems. Children who also suffer from weak or defective immune systems should not be vaccinated until they show visible improvements in their conditions or the vaccine will cause more damage than good.
However, children suffering from minor illnesses such as a low grade fever cough or cold or mild diarrhea can safely be injected with the vaccine. Children should be vaccinated against the following childhood diseases: Hepatitis B, Rotavirus, Diphtheria, tetanus, pertussis, Haemophilus influenza type B, Pneumococcal, Poliovirus, Influenza, Measles, Mumps, Rubella, Varicella (chickenpox), Hepatitis and Meningococcal. Vaccines contain weak doses of antigen that inflict diseases. This dose weakens the stronger disease antigens which are destroyed.
Exposure to the weaker antigen to create antibodies that put a stop to diseases.
Younger children and new born babies are threatened by hundred of antigen on a daily because of the environment around them and being injected with three antigens do not damage the immune system of children. People should be assured that before any vaccine is made available to the public, it undergoes many years of rigorous scientific testing to make it safe for public use. Using these tests as the basis for its recommendations on the type of vaccines required, they are put on the market two times in a calendar year by the Centres for Disease control. Although childhood diseases do not occur a second time, there are always the rare exceptions when adults can be infected by these diseases.