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Liverpool star Mane converted a penalty just before half-time in Thies near Dakar to give Group I leader Senegal a half-time advantage.

Victory for the Teranga Lions was sealed on 74 minutes when Mane set up Opa Nguette to score just two minutes after he had come off the bench.

Senegal's best Cup of Nations showing was finishing runner-up in 2002 and 2019, but the nation is now the top-ranked country in Africa and lies 97 places above Guinea-Bissau in the world listings.

The Senegalese have a maximum nine points from three matches in a mini-league they seem certain to win, Congo Brazzaville and Guinea-Bissau have three each and eSwatini none.

Meanwhile, the Comoros overcame having scorer Youssouf M'Changama red-carded just before half-time to keep alive dreams of a first Cup of Nations appearance.

Guinea edged dogged Chad 1-0, Burundi surprised Mauritania by forcing a late draw and Kenya could manage only a 1-1 draw with 10-man Comoros in other qualifiers.

The matches were the first since last November in the Cup of Nations qualifiers as the coronavirus pandemic severely disrupted the African international schedule.A limited number of socially-distanced spectators were permitted in Mauritania while the other matches went ahead behind closed doors.