An elderly British man had arrived at a private hospital in Johannesburg seriously ill, but health workers weren’t sure of the underlying cause

At the Institut Pasteur de Dakar, scientists worked through the night, using sophisticated lab equipment and powerful computers to deliver results awaited by health officials…

JOHANNESBURG (AP) — When South African infectious disease specialist Lucille Blumberg checked her email on the morning of May 1, while the country was celebrating the Labor Day…