Canada’s main stock index suffered its worst performance of the year as investors were spooked by new uncertainty about the coronavirus.

The S&P/TSX composite index closed down 56.44 points at 17,565.34.

In New York, the Dow Jones industrial average was down 170.36 points at 28,989.73. The S&P 500 index was down 30.07 points at 3,295.47, while the Nasdaq composite was down 87.57 points at 9,314.91.

The Canadian dollar traded for US76.10¢ compared with an average of US76.09¢ on Thursday.

The March crude contract was down US$1.40 at US$54.19 per barrel and the March natural gas contract was down US3.4¢ at US$1.87 per mmBTU.

The February gold contract was up US$6.50 at US$1,571.90 an ounce and the March copper contract was down US4.2¢ at US$2.68 a pound.