Shares around the world are in free-fall as the spread of coronavirus brings the world economy to a halt. At the start of US trading, shares plunged and triggered a trading halt in an attempt to curb panicky selling.
When trade resumed, shares continued to fall, following European markets lower.
The initial declines came after the US President Donald Trump restricted travel from mainland Europe.
Brussels correspondent Lucy Hough has all the reaction from the European Union on the United States Travel Ban.