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Johnson & Johnson coronavirus vaccine trial halted by participant’s illness

Johnson & Johnson said the stoppage was due to "an unexplained illness in a study participant."

Large banners hang in an atrium at the headquarters of Johnson & Johnson in New Brunswick, N.J. in 2013.
Large banners hang in an atrium at the headquarters of Johnson & Johnson in New Brunswick, N.J. in 2013.Read moreMel Evans / AP
    by The Associated Press, Associated Press
    Updated 
    Published