All of the following statements about ‘yaws’ are true, except:
**Core Concept**
Yaws is a chronic, infectious disease caused by the bacterium *Treponema pallidum* subspecies *pertenue*, primarily affecting the skin, bones, and cartilage. It is characterized by a primary lesion, followed by a latency period and potential late-stage manifestations.
**Why the Correct Answer is Right**
The correct answer cannot be determined without specific options, but generally, yaws is known for its early infectious stage, where a mother yawn or raspberry-like lesion appears, and its late-stage manifestations, which can include gummatous lesions and destruction of skin, bones, and cartilage.
**Why Each Wrong Option is Incorrect**
**Option A:** Without specific details, it's impossible to assess, but typically, incorrect statements about yaws might involve its causative agent, mode of transmission, or clinical presentation.
**Option B:** Similarly, without specifics, one might incorrectly attribute yaws to the wrong bacterium or confuse its symptoms with those of other treponematoses.
**Option C:** An incorrect statement could involve the disease's latency period, its response to treatment, or the demographics it affects.
**Option D:** This might involve misconceptions about yaws' geographical distribution, its relationship to other diseases like syphilis, or its prevention and control measures.
**Clinical Pearl / High-Yield Fact**
A key point to remember about yaws is its similarity in causative agent to syphilis, yet it primarily affects the skin and does not progress to the systemic, life-threatening complications seen in syphilis.
**Correct Answer:** D. Yaws is not typically sexually transmitted.