Warren came in fourth place in Nevada, but her campaign argues that gains from her pivotal debate might still materialize.
Mike Bloomberg's social media army, who can command payments of $2,500 a month, have variable levels of commitment.
A Twitter spokesman said the identical posts violated its policy against manipulation and spam that was created in response to the 2016 election.
The US flew back 14 patients from the Diamond Princess in Japan, keeping them isolated from uninfected passengers. Trump reportedly wasn't told.
A woman tested positive for the coronavirus but she never became physically ill. Her family members, however, developed fevers.