They get great reviews,

"In review, the National Vaccine Information Center (NVIC) is a quackery level anti-vaccination organization. The entire premise of the website is to encourage parents and adults not to vaccinate due to perceived dangers that are not accepted by science, as well as promoting propaganda campaigns such as displaying billboards along highways. Further, NVIC also claims a partnership with known pseudoscience purveyor, Joseph Mercola. This source also promotes the debunked claim that vaccines cause autism.

Overall, this is a quackery level pseudoscience website that promotes dangerous information that is not scientifically backed. (D. Van Zandt 9/18/2018) Updated (3/16/2019)"