Over the years, these opportunists have cultivated a strategy optimized for the social era. They drip anti-science skepticism into Facebook groups and Instagram stories and posts, where algorithms reward content that elicits strong emotional reactions, further amplifying the misinformation.
https://www.bloomberg.com/news/features/2021-04-01/covid-vaccine-and-fertility-facebook-s-platform-is-letting-fake-news-go-viral