A dangerous new strain of anti-vaxxer 12/23/2020 10:00 AM EST PROGRAMMING NOTE: Future Pulse will not publish from Thursday, Dec. 24, through Friday, Jan. 1. We'll be back on our normal schedule on Wednesday, Jan. 6. The Big Idea A NEW DIGITAL BREED OF ANTI-VAX: Social media companies have been grappling with how to handle anti-vaccination movements for years. But the pandemic has given rise to a new kind of anti-vax content online that is proving harder for tech platforms to police. Part of the trouble is that there is limited data around Covid vaccines, and the virus continues to perplex doctors. That makes some narratives harder to refute than claims such as the debunked but persistent assertion that childhood shots cause autism.