Investors are also awaiting Federal Reserve chair Jerome Powell's speech at the Jackson Hole symposium for clues over any tapering of stimulus measures
The dollar index, which measures the currency against six rivals, edged up 0.05% to 92.867 after dropping to 92.801 overnight for the first time since Aug. 17
MSCI's broadest index of Asia-Pacific shares outside Japan was last off slightly, but still up 3.7% so far this week. The index fell to its lowest in 2021 at the end of the previous week
The FDA move "is paving the way for organisations to mandate vaccines for workers and thus lift vaccination rates higher", said National Australia Bank's Tapas Strickland
Risk appetite in global markets was up, after the US Food and Drug Administration granted full approval to the COVID-19 vaccine developed by Pfizer and BioNTech
The primary source for investor concern is the global prominence of the Delta coronavirus variant which is set to weigh on European manufacturing survey data due shortly
The dollar index, which measures the currency against six peers, was little changed at 93.468 from Friday, when it climbed as high as 93.734 for the first time since Nov. 4
The greenback was also boosted by expectations the Federal Reserve could still start to taper stimulus this year, even with COVID-19 infections surging this month in the United States
The dollar index, which measures the U.S. currency against six rivals, climbed as high as 93.502, its strongest since Nov. 5, before trading 0.26% higher at 93.464
Expectations of an end to the largesse that helped drive a global equity rally for more than a year added to the already sombre mood on trading floors caused by the fast-spreading Covid Delta variant, which is forcing a re-evaluation of the economic recovery as fresh curbs are put in place
Prior to the market opening, the People's Bank of China (PBOC) set the midpoint rate at 6.4765 per dollar, 48 pips or 0.07% weaker than the previous fix of 6.4717
The dollar eased to 109.24 yen, having lost about 1% over the past two sessions while the euro slipped to as low as 128.50 yen, touching its lowest level since late March