2018 年尼日利亚拉沙热病例增加期间的拉沙病毒基因组分析。
Genomic Analysis of Lassa Virus during an Increase in Cases in Nigeria in 2018.
机构信息
From the Broad Institute of the Massachusetts Institute of Technology (MIT) and Harvard University (K.J.S., K.G.B., S.M., S.F.S., S.M.W., R.R.S., J.Q., S.W., P.B., S.Y., B.C., D.K., A.C., A.G.-Y., C.A.F., D.J.P., N.L.Y., B.L.M., P.C.S.), the Center for Systems Biology, Department of Organismic and Evolutionary Biology (K.J.S., K.G.B., S.F.S., S.W., B.C., D.K., C.A.F., N.L.Y., P.C.S.), and the Faculty of Arts and Sciences (M.N.), Harvard University, Harvard University Extension School (R.R.S.), and Harvard-MIT Health Sciences and Technology, MIT (S.Y., P.C.S.), Cambridge, and the Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health (K.G.B., S.F.S., B.L.M., P.C.S., C.T.H.), and Beth Israel Deaconess Medical Center, Division of Infectious Diseases (S.M.), Boston - all in Massachusetts; the African Center of Excellence for Genomics of Infectious Diseases (P.E., J.U.O., E.U., T.K., F.A., J.U., A.G., M.M., I.N., P.O., O.T., O.A.F., C.T.H.) and the Department of Biological Sciences, College of Natural Sciences (J.U.O., E.U., T.K., F.A., J.U., P.O., O.A.F., C.T.H.), Redeemer's University, Ede, the Institute of Lassa Fever Research and Control (I.O., C. Iruolagbe, J.A., E.U., P.A., G.O., O.O., B.O., E.B.M., M.A., R.E., B.E., E.O.-E., G.A., S.O., P.O.O., C.T.H.) and the Department of Medicine (P.O.O.), Irrua Specialist Teaching Hospital, Irrua, the Nigeria Center for Disease Control, Abuja (C. Ihekweazu), and the Department of Medicine, Faculty of Clinical Sciences, Ambrose Alli University, Ekpoma (P.O.O.) - all in Nigeria; the Laboratory of Parasitology/Mycology HALD, Cheikh Anta Diop University of Dakar, Dakar, Senegal (A.G.); Kenema Government Hospital, Kenema, Sierra Leone (M.M.); Tulane Health Sciences Center, Tulane University, New Orleans (R.F.G.); the Departments of Immunology and Microbial Science and Integrative Structural and Computational Biology, Scripps Research Institute, and the Scripps Translational Science Institute, La Jolla, CA (K.G.A.); and Howard Hughes Medical Institute, Chevy Chase, MD (P.C.S.).
出版信息
N Engl J Med. 2018 Nov 1;379(18):1745-1753. doi: 10.1056/NEJMoa1804498. Epub 2018 Oct 17.
During 2018, an unusual increase in Lassa fever cases occurred in Nigeria, raising concern among national and international public health agencies. We analyzed 220 Lassa virus genomes from infected patients, including 129 from the 2017-2018 transmission season, to understand the viral populations underpinning the increase. A total of 14 initial genomes from 2018 samples were generated at Redeemer's University in Nigeria, and the findings were shared with the Nigerian Center for Disease Control in real time. We found that the increase in cases was not attributable to a particular Lassa virus strain or sustained by human-to-human transmission. Instead, the data were consistent with ongoing cross-species transmission from local rodent populations. Phylogenetic analysis also revealed extensive viral diversity that was structured according to geography, with major rivers appearing to act as barriers to migration of the rodent reservoir.
2018 年，尼日利亚拉沙热病例异常增加，引起了国内外公共卫生机构的关注。我们分析了 220 份来自感染患者的拉沙病毒基因组，其中包括 129 份来自 2017-2018 年传播季节的样本，以了解导致病毒数量增加的病毒群体。2018 年的样本中共有 14 份初始基因组是在尼日利亚救世主大学生成的，研究结果实时与尼日利亚疾病控制中心共享。我们发现，病例的增加不是由于特定的拉沙病毒株引起的，也不是由人与人之间的传播持续引起的。相反，这些数据与当地啮齿动物种群持续的跨物种传播一致。系统发育分析还显示了广泛的病毒多样性，这些多样性根据地理位置进行了结构划分，主要河流似乎对啮齿动物库的迁移起到了屏障作用。
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