The spread of the novel coronavirus threatens to trigger a sharp pullback in U.S. hiring after the labor market showed signs of picking up earlier this year.

Services industries that help drive the U.S. economy—including air transportation, restaurants, entertainment and retail—would suffer the most from the spread of the virus, according to economic research firm Capital Economics.

Some of those sectors saw particularly strong job gains in February before cases of the infection began rising in the U.S., according to Friday’s jobs report from the Labor Department. Leisure-and-hospitality companies added 51,000 jobs in February, and restaurants added 53,000 to payrolls.

“This forward momentum could help these industries weather this shock, but also raises the possibility that job growth may slow significantly if the impact of the virus hits these industries hard,” said Nick Bunker, economist at job site Indeed.

Economists largely dismissed February’s robust monthly job gain of 273,000 as a less important economic indicator than usual. Most companies reported February employee head-counts before concerns escalated that the epidemic would hit U.S. economic growth.