跟进：非洲疾控中心派顶尖科学家赴尼日利亚溯源埃博拉病例：患者未到过刚果（金），与肯尼亚病例或曾同在Entebbe机场

据路透社报道，非洲疾病预防控制中心（Africa CDC）主任 Jean Kaseya 10月26日在英国 London 接受采访时表示，一组顶尖埃博拉科学家将前往尼日利亚首都 Abuja，调查该国十多年来首名确诊患者究竟如何感染本迪布焦型埃博拉病毒（Bundibugyo）：这名患者是在 Abuja 工作的瑞士外交官的妻子、出生于乌干达，其旅行记录显示她从未到过本轮疫情的中心刚果（金）。

尼日利亚10月20日确认这名女子感染本迪布焦型埃博拉，本站此前已报道其身份与感染毒株。感染来源之所以关键，是因为它决定本轮疫情——已是史上第二大埃博拉疫情——是否正在尚未被发现的地点悄然扩散，也关系到所有可能接触者的追踪与隔离。Kaseya 说：「未知数太多了。我要带一组科学家去 Abuja，因为我们必须由科学引领。」

调查的一条主线指向肯尼亚本月报告的首名患者：一名曾从刚果（金）旅行的男子，其后已死亡。上周五的基因组测序显示，两名患者感染的病毒株高度相近。尼日利亚患者此前在乌干达度假，10月3日途经 Entebbe 国际机场；肯尼亚患者当时很可能也在同一机场，两人航班相隔约40分钟，但并非从同一登机口出发，目前不清楚双方是否有过接触。

Kaseya 同时强调，病毒株相近并不意味着两名患者之一直接传染了另一人；这名在 Abuja 接受治疗的患者病情正在好转，她表示不记得见过肯尼亚那名患者。埃博拉通过直接接触有症状感染者的体液传播，科学家团队还将排查是否存在尚未查明的中间传播者等其他路径。

背景方面，本站此前据刚果（金）卫生部门10月20日公布的数字报道，该国本轮疫情已录得9,704例确诊病例、4,687人死亡；本轮疫情于今年5月15日在刚果（金）宣布暴发，世卫组织其后将其列为国际关注的突发公共卫生事件，疫情已报告于四个非洲国家。

关联：跟进：尼日利亚埃博拉患者确认为瑞士外交官妻子曾赴乌干达旅行、感染毒株已查明

Follow-Up: Africa CDC Sends Leading Ebola Scientists to Nigeria to Trace a Case's Origin: Patient Never Visited Congo and May Have Crossed Paths With the Kenya Case at Entebbe Airport

A team of leading Ebola scientists will travel to Abuja, Nigeria, to investigate how the country's first confirmed Ebola patient in more than a decade contracted the virus, Africa Centres for Disease Control and Prevention (Africa CDC) Director-General Jean Kaseya told Reuters in an interview in London on Monday, October 26. The patient — the Ugandan-born wife of a Swiss diplomat based in Abuja — had not visited the Democratic Republic of Congo, the epicentre of the ongoing Bundibugyo Ebola outbreak, according to her travel records.

Nigeria confirmed the woman's Bundibugyo infection on October 20, and GSM has previously reported her identity and the virus strain. Finding out how she became ill matters to ensure the outbreak — already the second-largest Ebola epidemic on record — is not spreading silently in as-yet undiscovered locations, and to help trace and isolate all contacts. "We have so many unknowns," Kaseya said. "I'm bringing a group of scientists in Abuja because… we need to be led by science."

One theory the scientists will investigate is a potential link to Kenya's first case, reported earlier this month in a man who had travelled from Congo and has since died. Genomic sequencing on Friday showed the viruses that infected the two patients were closely related. The Nigerian patient had been on holiday in Uganda and travelled through Entebbe International Airport on October 3; the Kenyan patient was likely at the airport at the same time, their flights about 40 minutes apart, although they did not depart from the same gate and it is not clear whether they had any contact.

Kaseya stressed that genomic similarity does not mean one patient directly infected the other. The Abuja patient, whose condition is improving, has said she does not remember meeting the Kenya patient. Ebola spreads through direct contact with the bodily fluids of an infected person displaying symptoms, and investigators are also considering whether an unidentified intermediary facilitated transmission.

For context, GSM has previously reported Congolese health authorities' October 20 figures of 9,704 confirmed cases and 4,687 deaths in the Democratic Republic of Congo in this outbreak, which was declared on May 15 and later listed by the WHO as a public health emergency of international concern, with cases reported in four African countries.

来源：GSM·美国（原文链接）

图片来源：图：位于乌干达的 Entebbe 国际机场航站楼（资料图）——两名患者10月3日或曾同在此机场。照片：PetterLundkvist，CC BY 3.0，经 Wikimedia Commons。 / Photo: The terminal of Entebbe International Airport in Uganda (file photo), where the two patients may both have been on October 3. Photo by PetterLundkvist, CC BY 3.0, via Wikimedia Commons.

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