{固定描述} The World Health Organization has warned that a fully licensed Ebola vaccine may still be nine months away, even as the outbreak's suspected death toll reaches 139 and total cases exceed 600. The timeline underscores the urgent need for containment measures and the challenges facing vaccine developers and public health agencies.
WHO Warns Ebola Vaccine Development Could Take Nine Months as Case Count Climbs Past 600 - {财报副标题}
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