By Robert Barba

UnitedHealth Group Inc. said Wednesday that its president has returned from a stint to co-lead an effort by the World Health Organization to accelerate the development of a Covid-19 vaccine.

In April, the company said Sir Andrew Witty would take a leave of absence following a request to serve as a global envoy for the WHO.

On Wednesday, the company said Mr. Witty, who also serves as chief executive of its Optum unit, would resume his duties immediately.

Write to Robert Barba at robert.barba@wsj.com

(END) Dow Jones Newswires

12-02-20 1630ET