(Reuters) – When Liberian-American Patrick Sawyer collapsed at Lagos airport, he brought Ebola into a potentially ideal place for the deadly virus to spread – a vast, dirty, overcrowded city where tracing carriers and their contacts is a major problem.
Sawyer’s arrival last month from Liberia – which along with Sierra Leone and Guinea lies at the center of an outbreak that has killed more than 1,000 people – caught authorities in the Nigerian commercial capital unprepared…
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