US President Donald Trump speaks during the first presidential debate at Case Western Reserve University and Cleveland Clinic in Cleveland, Ohio, Sept. 29. AFP-Yonhap

U.S. President Donald Trump's COVID-19 infection is expected to strengthen the dollar due to investors chasing safe assets, but financial markets are not likely to undergo high volatility, market experts here said Saturday.

Trump and first lady Melania tested positive for the coronavirus Friday, sending Wall Street's main stock indexes lower. The dollar index, a gauge of the greenback's value against a basket of six foreign currencies, rose 0.14 percent.

Analysts said Trump testing positive is expected to raise uncertainty in financial markets, prompting investors to snap up the dollar. But global markets are unlikely to post a sharp rise or decline only on this news in light of hopes for new U.S. stimulus measures, they added.

"The FX market is expected to be affected by Trump's infection, but there is little chance of the market seeing high volatility on the single issue," a currency analyst said.