APRNEWS - Mr Lungu lost the presidency to Hakainde Hichilema in 2021, after which he announced his retirement.

After six years in office he left the country facing serious economic issues as Africa's most indebted nation.

His return to politics sets a stage for a bruising 2026 presidential race.

President Trump tweeted on Sunday that he is “immune” to the novel coronavirus and “can’t give it,” even though the White House has not released any negative test results and immunity to the virus remains poorly understood.