The five other confirmed cases are believed to be health workers who treated Liberian-American Patrick Sawyer who was sick when he flew into Lagos and died days later on July 25.
This past May, Harrison Okene was working as a cook on the tugboat Jacson-4 when his ship capsized and sank in freezing waters off the coast of Nigeria. Everyone else onboard died, but Okene managed to survive in a tiny air pocket for 60 hours, drinking only Coke.