A small percentage of people — called superspreaders — may be responsible for a large number of COVID-19 infections, research is starting to indicate.
Why it matters: While there's no method to detect who these people are before they infect others, there are ways to control behaviors that cause superspreading events — a key issue as states start to reopen and debate what types of events are OK.
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Twitter slapped a fact-check label on a pair of months-old tweets from a Chinese government spokesperson that falsely suggested that the coronavirus originated in the U.S. and was brought to Wuhan by the U.S. military, directing users to "get the facts about COVID-19."
Why it matters: The labels were added after criticism that Twitter had fact-checked tweets from President Trump about mail-in voting, but not other false claims from Chinese Communist Party officials and other U.S. adversaries.