Study establishes genomic data set on Lassa virus

An international team of researchers has developed the largest genomic data set in the world on Lassa virus (LASV). The genomic catalog contains nearly 200 viral genomes collected from patient and field samples from the major host of Lassa virus--the multimammate rat. The study suggests that these four LASV strains originated from a common ancestral virus more than 1,000 years ago and spread across West Africa within the last several hundred years.

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