I choose the web page of Centers of Disease Control and Prevention. ( www.cdc.gov ) The reason why is because we have been vaccinated over and over again specially when we were in our early stages of growing up, I wanted to find out how it works and how it prevent us from catching a disease. The only and main purpose of getting a vaccine is to be immune to the different diseases in our community. Vaccines work better in a community where most of the population has been vaccinated; this will lead to a lower risk of anyone to be contagious with a disease. For a vaccine to be release has to go trough a lot of safety requirement so it can be used by the numerous numbers of persons , it requires years of testing before the vaccine can pass the law standards and can be distributed. “As a result, the
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