Hundreds of women, many with children strapped on their backs alongside their few belongings, sing melodious tunes expressing their joy as the small boats approach the ferry M.V. Liemba.

They are among a group of about 600 Burundi refugees evacuated by the U.N. refugee agency Saturday from a makeshift refugee camp at the fishing village of Kagunga, Tanzania. The small town has hosted thousands of refugees and has now been hit by a cholera outbreak. The refugees are being taken to another spot on the lake to a camp with better facilities, said Celine Schmitt, a spokeswoman for the U.N refugee agency.

Tens of thousands of Burundians are escaping political turmoil at home triggered President Pierre Nkurinziza's bid for a third term in office in the June 26 election.