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Genomic Analysis of Lassa Virus during an Increase in Cases in Nigeria in 2018

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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6181183/

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https://www.nejm.org/doi/full/10.1056/NEJMoa1804498

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Título

Genomic Analysis of Lassa Virus during an Increase in Cases in Nigeria in 2018

Materia

Research

Descripción

In early 2018 Nigeria experienced an unprecedented increase in Lassa fever cases with widespread geographic distribution.

Fecha

2018-11-01

Citación

Siddle, Katherine J., Philomena Eromon, Kayla G. Barnes, Samar Mehta, Judith U. Oguzie, Ikponmwosa Odia, Stephen F. Schaffner, Sarah M. Winnicki, Rickey R. Shah, James Qu, Shirlee Wohl, Patrick Brehio, Christopher Iruolagbe, John Aiyepada, Eghosa Uyigue, Patience Akhilomen, Grace Okonofua, Simon Ye, Tolulope Kayode, Fehintola Ajogbasile, Jessica Uwanibe, Amy Gaye, Mambu Momoh, Bridget Chak, Dylan Kotliar, Amber Carter, Adrianne Gladden-Young, Catherine A. Freije, Omigie Omoregie, Blessing Osiemi, Ekene B. Muoebonam, Michael Airende, Rachael Enigbe, Benevolence Ebo, Iguosadolo Nosamiefan, Paul Oluniyi, Mahan Nekoui, Ephraim Ogbaini-Emovon, Robert F. Garry, Kristian G. Andersen, Daniel J. Park, Nathan L. Yozwiak, George Akpede, Chikwe Ihekweazu, Oyewale Tomori, Sylvanus Okogbenin, Onikepe A. Folarin, Peter O. Okokhere, Bronwyn L. MacInnis, Pardis C. Sabeti, and Christian T. Happi. 2018. "Genomic Analysis of Lassa Virus during an Increase in Cases in Nigeria in 2018." The New England journal of medicine 379 (18):1745-53.

Resumen

Abstract

In early 2018 Nigeria experienced an unprecedented increase in Lassa fever cases with widespread geographic distribution. We report 77 Lassa virus genomes generated from patient samples, 14 from 2018, to investigate whether recent changes in the virus genome contributed to this surge. Our data argue that the surge is not attributable to a single Lassa virus variant, nor has it been sustained by human-to-human transmission. We observe extensive viral diversity structured by geography, with major rivers appearing to act as barriers to migration of the rodent reservoir. Together our results support that the 2018 Lassa fever surge was driven by crossspecies transmission from local rodent populations of multiple viral variants from different lineages.

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