Nigeria, June 3 -- Billionaire philanthropist Bill Gates has warned that global health inequalities remains stark, with children born in parts of Africa still 50 times more likely to die before age five than those in wealthier countries.

Mr Gates, chair Gates Foundation, made the remarks on Monday during a speech at the African Union headquarters in Addis Ababa, where he reflected on 25 years of the Bill and Melinda Gates Foundation's work on the continent.

He said despite decades of progress, most child deaths under five still occur in low-income countries.

Mr Gates described this as "profoundly unjust", noting that the fight to save young lives remains far from over.

While he highlighted the challenges, he also acknowledged the prog...