One in 15 Africans has been fully vaccinated, against nearly 70% in the G7 group of richer nations, according to data from the foundation, which was set up by the Sudanese telecoms billionaire to promote better governance and economic development in Africa.
"From early in this crisis, our Foundation and other African voices have been warning that an un-vaccinated Africa could become a perfect incubator for variants," its chair Mo Ibrahim said in a statement.
"The emergence of Omicron reminds us that COVID-19 remains a global threat, and that vaccinating the whole world is the only way forward," he added. "Yet we continue to live with extreme vaccine discrimination, and Africa in particular is being left behind."