Global march of cold sore virus may have started with a kiss - The Times

Ancient samples of the virus that causes cold sores suggest it first spread around the world about 5,000 years ago, when humans invented kissing.Analysis of th

Ancient samples of the virus that causes cold sores suggest it first spread around the world about 5,000 years ago, when humans invented kissing. Analysis of the samples genetic code indicates that … [+542 chars]

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