The dollar index stood at 93.030, bouncing back from Thursday's low of 92.807 as the euro traded at $1.1755, having eased from the previous day's high of $1.1779
Sterling has traded largely in line with global risk sentiment in financial markets in recent weeks, tracking the direction of world stock markets higher or lower
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 rouble was up 0.2% against the dollar at 74.10, having hit 74.5950 on Friday for its weakest since July 20. Versus the euro, the rouble added 0.2% to 86.75
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 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