The British bank said the figure, which is similar to estimates it gave for Taylor Swift's UK tour in 2024 and the Oasis UK reunion last year, highlighted "the rise of concert tourism".
The UN health agency has declared the surge of the highly contagious haemorrhagic fever an international health emergency and called an urgent meeting on the crisis.
A joint European-Chinese spacecraft blasted into orbit to investigate what happens when extreme winds and giant explosions of plasma shot out from the Sun slam into Earth's magnetic shield.