世界卫生组织（WHO）表示，目前仍不清楚导致俄罗斯一家鼠疫研究所一名实验室工作人员死亡的肺炎病因，且尚未发现任何鼠疫病例。
The World Health Organization (WHO) has said it still does not know what caused the pneumonia that killed a laboratory worker at a Russian plague research institute and that no case of plague has beened.
这家联合国卫生机构周六在一份声明中表示，俄罗斯国家卫生监管机构告知世卫组织，对该名工作人员及其接触者的检测结果显示，他们所检测的危险病原体均为阴性。
Russia’s state health regulator told the WHO that tests on the worker and people who had been in contact with her were negative for the dangerous pathogens they tested for, the United Nations health agency said in a statement on Saturday.
世卫组织补充说，她的接触者目前仍未出现任何症状，也没有发现其他与此相关的严重肺炎病例。
Her contacts still showed no symptoms, and no further linked cases of severe pneumonia had been found, the WHO added.
声明称：“根据所提供的信息……世卫组织尚未发现与此事件相关的持续传播证据。目前的一个关键不确定因素是，这名已故实验室工作人员的诊断结果尚未得到确认。”发生了什么？
“Based on the information provided… WHO has not identified evidence of ongoing transmission associated with this event. A key uncertainty remains the absence of a confirmed diagnosis in the deceased laboratory worker,” it said.
这名工作人员于10月2日在未公开的情况下患病并死亡，促使当局隔离了约200人，并在社交媒体上引发了公众对公共卫生的担忧。
What happened?
据俄罗斯媒体报道，死者名为达里娅·希皮洛娃（Darya Shipilova），是西伯利亚伊尔库茨克地区伊尔库茨克西伯利亚及远东反鼠疫研究所的一名28岁实验室技术员。
The worker fell ill and died in undisclosed circumstances on October 2, prompting authorities to quarantine about 200 people and stoking public health fears on social media.
起初，人们怀疑是肺鼠疫，这是一种由鼠疫耶尔森菌引起的肺部感染，通常存在于小型哺乳动物及其跳蚤身上。邻近的布里亚特共和国州长曾表示，该女子“可能死于鼠疫”。
Russian media named her as Darya Shipilova, a 28-year-old laboratory technician at the Irkutsk Antiplague Research Institute of Siberia and the Far East, in the Siberian region of Irkutsk. Pneumonic plague, a lung infection caused by the bacterium Yersinia pestis, which is usually found in small mammals and their fleas, was suspected early on.
俄罗斯卫生监管机构“消费者权益保护和公益监督局”（Rospotrebnadzor）表示，她被诊断为“病因不明的肺炎”。
The governor of neighbouring Buryatia said the woman had “died, maybe of the plague”.
俄罗斯当局称，该工作人员已按规定接种疫苗，且在其体内未发现与其工作相关的微生物。他们表示，尸检结果未检测出鼠疫。
Russia’s health watchdog Rospotrebnadzor said she had been diagnosed with “pneumonia of unknown aetiology”. Russian authorities said the worker was appropriately vaccinated and that no microorganisms linked to her work were found in her body.
周四，俄罗斯表示已完成对其所有接触者的健康检查，并已向世卫组织提供了所有信息。
They say post-mortem tests did not detect plague.
一名当地官员在10月6日表示，60%被隔离的人员已经解除隔离。
On Thursday, Russia said it had completed health checks on all her contacts and had given the WHO all the information.
世卫组织总干事谭德塞周三呼吁俄罗斯就媒体报道称一名员工因原因不明的肺炎患病作出回应。俄罗斯将这些报道驳斥为“假信息”。美国也曾呼吁俄罗斯保持透明。
A local official said on October 6 that 60 percent of those placed in quarantine had already been released. WHO chief Tedros Adhanom Ghebreyesus asked Russia on Wednesday to respond to media reports of a second employee with pneumonia of undetermined cause. Russia dismissed the reports as “false information”.
自COVID-19疫情爆发以来，全球卫生官员对原因不明的致命肺炎病例一直保持高度警惕。该疫情始于中国一起快速传播、致命的呼吸道疾病聚集病例。个别肺炎病例的病因往往无法确定。
The United States has also called on Russia for transparency. Global health officials have been extra alert to deadly pneumonia cases of unknown cause since the COVID-19 pandemic, which began with a cluster of fast-spreading, fatal respiratory illness in China. The cause of individual pneumonia cases often cannot be determined.