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Science 18 January 2008:
Vol. 319. no. 5861, p. 272
DOI: 10.1126/science.319.5861.272
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News of the Week

INFECTIOUS DISEASES:
Isolated Tribe Gives Clues to the Origins of Syphilis

Carl Zimmer

A team of researchers argues in work published this week that syphilis originated as a milder, nonsexual disease in the New World and evolved into its current form after Europeans arrived.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)