https://www.techdirt.com/articles/20210210/15252746227/content-moderation-case-study-twitter-attempts-to-tackle-covid-related-vaccine-misinformation-2020.shtml

Summary: Following on its efforts in tamping down on election-related misinformation, Twitter's latest moderation efforts target misleading posts about COVID and the coronavirus, with a specific focus on vaccine related information.

Despite being months into a global pandemic, there has been a lack of clear, consistent communication from all levels of government in the United States, which has given conspiracy theorists and anti-vaccination activists plenty of room to ply their dubious trades. Twitter is hoping to reduce exposure to tweets containing misleading information as the nation continues to deal with multiple COVID outbreaks.