New molecular clock indicates smallpox evolved earlier than believed

Smallpox is older than thought, according to results of a new technique reported in the Sept. 24 issue of the Proceedings of the National Academy of Sciences by researchers from Lawrence Livermore National Laboratory and the Centers for Disease Control (CDC).

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<p><a href="http://www.physorg.com/news110033734.html">New molecular clock indicates smallpox evolved earlier than believed</a></p> <p>Smallpox is older than thought, according to results of a new technique reported in the Sept. 24 issue of the Proceedings of the National Academy of Sciences by researchers from Lawrence Livermore National Laboratory and the Centers for Disease Control (CDC).</p>