Twitter's founder and CEO Jack Dorsey recorded a yet-to-be-released podcast with fitness personality, Ben Greenfield, who has a history of spreading false claims that "vaccines do indeed cause autism," thanking him in a tweet on Tuesday.
Reality check: Dorsey's comments come on the heels of other online platforms, from Facebook to Pinterest to Amazon, taking steps to combat misinformation about vaccinations. To date, Twitter had steered clear of the controversy. In February, Greenfield recommended that his fanbase watch the documentary "Vaxxed."
Go deeper: Adam Schiff demands Amazon answer questions about anti-vaxxer content