A farmer with h/o handling cows presents wtih ulcer over hand with central black eschar. False statement regarding organism responsible is :
**Core Concept**
The question is testing the ability to identify the causative organism responsible for a specific skin condition, in this case, a hand ulcer with a central black eschar. This condition is likely to be a type of cutaneous anthrax, which is a zoonotic infection caused by Bacillus anthracis, a spore-forming bacterium.
**Why the Correct Answer is Right**
The correct answer is related to the fact that Bacillus anthracis, the causative organism of cutaneous anthrax, enters the body through cuts or abrasions in the skin, where it germinates and produces toxins that cause the characteristic black eschar and ulceration. The organism's spores are found in the soil and can contaminate the skin of animals, such as cows, which can then transmit the infection to humans through direct contact.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is likely to be incorrect because it does not specify the correct organism responsible for cutaneous anthrax.
**Option B:** This option is incorrect because it does not mention the correct organism or the type of anthrax.
**Option C:** This option is incorrect because it does not specify the correct organism or the type of anthrax.
**Clinical Pearl / High-Yield Fact**
Cutaneous anthrax is a rare but serious infection that can occur in individuals who handle animals, such as cows, or their products, such as hides or wool. It is characterized by a painless ulcer with a central black eschar, which can develop into a serious systemic infection if left untreated.
**Correct Answer: C.