Microbiology: An Introduction
Microbiology: An Introduction
11th Edition
ISBN: 9780321733603
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: Benjamin Cummings
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Chapter 26, Problem 1A

The tropical skin disease called yaws is transmitted by direct contact. Its causative agent, Treponema pallidum pertenue, is indistinguishable from T. pallidum. Syphilis epidemics in Europe coincided with the return of Columbus from the New World. How might T. pallidum pertenue have evolved into T. pallidum in the temperate climate of Europe?

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