Shares of retailers and other consumer companies fell as Covid 19 continued to disrupt travel and other service industries.

The coronavirus surge continued to disrupt U.S. air travel as airlines canceled more than 1,100 domestic and international flights Thursday, according to aviation data tracker FlightWare.

On Thursday, the Centers for Disease Control and Prevention issued a Level 4 notice regarding cruise travel, advising Americans to avoid cruiselines, regardless of vaccination status.

Shares of cruiselines Royal Caribbean and Carnival fell slightly, with the latter paring gains for the year to roughly 1%. Earlier in the year, the so-called "reopening trade," which saw day traders pile into travel stocks, had brought Carnival about 50% above its current levels.

In one promising sign for discretionary spending, the number of weekly jobless claims fell last week, despite concerns about rising cases of Omicron.

Write to Rob Curran at rob.curran@dowjones.com

(END) Dow Jones Newswires

12-30-21 1643ET