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 holiday, an urgent message caught her attention.
A U.K.-based colleague had written about a passenger from a cruise ship sailing thousands of miles away in the Atlantic Ocean who had been evacuated and admitted to a Johannesburg hospital with suspected pneumonia. Others aboard the vessel were also sick.








