Yes.

He's rather infamous for his part in the 2019 Samoa measles outbreak.

See: https://apnews.com/article/rfk-jr-samoa-measles-kennedy-vacc...

See: https://www.nbcnews.com/news/us-news/rfk-jr-samoa-measles-va...

See: https://www.newsweek.com/rfk-jr-denies-samoa-visit-was-vacci...

The changes he's made upon taking over HHS are almost certain to have far-reaching affects which eclipse that.