KEY POINTS
  • The U.S. Consumer Price Index for April rose 4.2% from the same period last year, its sharpest rise since 2008.
  • The readings triggered sell-offs across global stock markets, as investors feared that the surge in inflation could prompt the Federal Reserve to alter its accommodative monetary policy stance. 
  • Fed officials have repeatedly suggested that along with inflation, employment will also have to pick up in a substantial and sustainable fashion before policy changes.  
A worker on an auto assembly line in Smyrna, Tennessee.

The concentration of price pressures in a handful of categories means markets shouldn't yet be worrying about inflation after Wednesday's U.S. surprise, economists have told CNBC.

The U.S. Consumer Price Index for April rose 4.2% from the same period last year, its sharpest rise since 2008, while the monthly climb in core inflation, which excludes volatile food and energy prices, was the fastest since 1981.