Facebook is banning claims about COVID-19 vaccines that have been debunked by public health experts, as governments prepare to roll out the first vaccinations against the virus. That includes posts that make false claims about how safe and effective the vaccines are, and about their ingredients and side effects. … The new ban is an expansion of Facebook's rules against misinformation about the coronavirus that could lead to imminent physical harm. The company said it removed 12 million such posts from Facebook and Instagram between March and October.