A massive study of over 1.2 million children has found no link between aluminum-containing vaccines and 50 chronic childhood conditions, including autism, ADHD, asthma, and diabetes, delivering a reassuring message about vaccine safety.

July 14 (UPI) -- A new study of more than 1.2 million people found no link between aluminum in childhood vaccines and long-term health problems, including autism, asthma or autoimmune diseases.