U.S. stock futures and oil prices fell on Friday after President Donald Trump said he and his wife had tested positive for the coronavirus, weeks ahead of elections.
Futures for the S&P 500 slid 1.21% by early afternoon in Asia, while Treasury yields also fell.
Brent crude slipped on the news and was down 78 cents, or 1.9%, at $40.53 a barrel at 0516 GMT. U.S. oil was 79 cents, or 2%, lower at $37.93.
U.S. oil is heading for a drop of more than 5% this week, while Brent is on track to fall more than 4%, in a second consecutive week of decline for both contracts.
The U.S. dollar rose, particularly against the British pound, the Australian and New Zealand dollars in a sign of risk aversion.
Trump earlier said on Twitter that he and his wife had been tested for coronavirus after Hope Hicks, a senior advisor who recently traveled with the president, tested positive.
He later tweeted he and the first lady had tested positive: “We will begin our quarantine and recovery process immediately,” he said.
Trump’s positive could cause a new wave of market volatility as investors brace for the hotly-contested presidential election in November.
“It has the potential to reduce Trump’s campaigning ability. He’s got a lot on and it’s an interruption,” said Sean Callow, currency strategist at Westpac in Sydney.