In a school, a child had abscess on lower leg. Swab taken revealed gram positive beta-hemolytic streptococci, and these were bacitracin sensitive. School physician observed that similar organism was isolated from throats of many other children. Which of the following is true statement with regards to this patient –

**Core Concept**
The question revolves around the identification and implications of a specific bacterial infection, namely **Streptococcus pyogenes**, which is a gram-positive, beta-hemolytic bacterium. This organism is known for causing a range of infections, from mild skin infections to life-threatening diseases. The bacterium's sensitivity to **bacitracin** is a key diagnostic feature.

**Why the Correct Answer is Right**
Given that the organism is gram-positive, beta-hemolytic, and sensitive to bacitracin, it points towards **Streptococcus pyogenes**, also known as Group A beta-hemolytic Streptococcus (GABHS). This bacterium is a common cause of skin infections, such as impetigo and pyoderma, as well as pharyngitis. The presence of similar organisms in the throats of other children suggests a potential outbreak of streptococcal pharyngitis, highlighting the contagious nature of this bacterium.

**Why Each Wrong Option is Incorrect**
**Option A:** Not provided, thus cannot be assessed.
**Option B:** Not provided, thus cannot be assessed.
**Option C:** Not provided, thus cannot be assessed.
**Option D:** Not provided, thus cannot be assessed.

**Clinical Pearl / High-Yield Fact**
It's crucial to differentiate **Streptococcus pyogenes** from other beta-hemolytic streptococci due to its implications for treatment and prevention of complications like rheumatic fever. The **bacitracin sensitivity test** is a simple and effective method to identify **Streptococcus pyogenes**.

**Correct Answer:** Not provided, as the answer choices are missing.

✓ Correct Answer: D. Depending on M protein, the cutaneous pathogenic bacteria can be differentiated from the pharyngeal culture bacteria