Some people believe that some vaccins, such as the MMR, thatt is to say, measles, mups and rubela, can produce autism. However, there are not cientific studies which can prove this statement.
There is a sort of trend to be against vaccins in general and this has generated a great controversy in our society. It is argued that mass vaccination increases immunulogic problems such as allergies and asthma because the body isn't using its immune system properly since there are no infections to fight against and as a consequence, this immune system attacks our body instead. In any case, thanksto vaccins, a lot of human lifes have been saved and some dangerous diseases, such as smallpox have been wiped out.
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