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Dermatology

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STD

Question
19 out of 42
 

Yaws is cause by: (AIIMS Nov 2013)



A Treponema pallidum

B Treponema pertenue

C Treponema carateum

D Treponema endemicum

Ans. B
Treponema pertenue

Yaws, pinta, and endemic syphilis are caused by nonvenereal treponemes. They do not have significant morphologic or genetic differences from Treponema pallidum which is the causative organism of venereal syphilis.

1. The endemic syphilis is caused by Treponema pallidum spp. endemicum. It involves the skin, bones, and mucous membranes.

2. Yaws is caused by Treponema palladium spp. pertenue. lt affects skin and bones.

3. Pinta is caused by Treponema carateum .It involves the skin alone.

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