Del Bigtree
![Bigtree in 2018](https://upload.wikimedia.org/wikipedia/commons/f/f5/Del_Bigtree_at_a_conference.png)
His frequent public speaking engagements and an influx of funding in 2017 have made Bigtree, who has no medical training, one of the most prominent voices in the anti-vaccination movement.
During the COVID-19 pandemic, Bigtree propagated conspiracy theories about the origin of the virus and COVID vaccines, and urged his audience to ignore the advice of health authorities. He is currently serving as communications director for Robert F. Kennedy Jr.'s 2024 presidential campaign. Provided by Wikipedia