Vaccines

Vaccines are generally considered to be the most successful public health intervention ever devised, and yet there have been opponents of vaccines ever since there have been vaccines.  Many people often spread misinformation about the vaccine, such as the notion that vaccines weaken the immune system and that children can develop autism after getting vaccinated. What is your opinion on the subject? Please provide your input.

Minimal 4 paragraphs. ( No introduction is needed )

at least 3 scholarly sources are requested (No older that 5years) . 

Examples of scholarly sourses:

-Published journal articles, books and other works (encyclopedias & newspapers)

-Official websites ending in .gov, .org, .edu (CDC,NIH,ADA,WHO, HARVARD, FIU,FNU)

Do not use Sites such Wikipedia, WebMD, Nursingworld, Allnurses they are NOT scholarly sources.