The National Network for Immunization Information (NNii) provides up-to-date, science-based information to healthcare professionals, the media, and the public: everyone who needs to know the facts about vaccines and immunization.

Vaccine Safety

Mitochondrial Disorders and Vaccines

In 2007, the National Vaccine Injury Compensation Program (VICP) conceded a case concerning a child with a mitochondrial disorder. What are the implications of this decision?


Vaccine Components

Aluminum Adjuvants in Vaccines

Some vaccines contain chemicals called adjuvants to help stimulate the production of immunity against the vaccine ingredients, making the vaccine more effective. In the United States, aluminum salts have frequently been incorporated as adjuvants in vaccines.