Vaccines and Autism

The burden of Infectious Disease has been reduced throughout the world most notably in the United States and other industrialized countries throw routine practice of childhood immunization. Out the years parents have proposed needs a vaccine groups and are very convinced that childhood vaccines containing a mercury based substance, thimerosal, which is used to prevent bacteria contamination for the vaccines can somehow cause autism. With this, discuss the differences between specific enough specific immunity; distinguish between active and passive immunity and list the requirements are properties of an ideal vaccine.