**Question:** The type of Diphtheria with highest moality is-

A. Generalized
B. Neuromuscular
C. Cardiac
D. Respiratory

**Correct Answer:** D. Respiratory

**Core Concept:**
Diphtheria is a severe infectious disease caused by the bacterium Corynebacterium diphtheriae. It primarily affects the respiratory system, leading to respiratory distress and potentially life-threatening complications. The term "moality" refers to the specific target organ or system affected by the disease.

**Why the Correct Answer is Right:**
Diphtheria affects the respiratory system with the highest mortality rate because it primarily targets the respiratory tract, causing severe inflammation, obstruction, and damage to the mucous membranes and vocal cords. This can lead to respiratory failure, myocarditis, and neuropathy.

**Why Each Wrong Option is Incorrect:**

A. Generalized (Option A) - Diphtheria can cause generalized infection, but the highest mortality is typically associated with respiratory involvement.
B. Neuromuscular (Option B) - While diphtheria can cause neuromuscular complications, the highest mortality is related to respiratory involvement.
C. Cardiac (Option C) - While diphtheria can cause cardiac complications, the highest mortality is primarily due to respiratory involvement.

**Clinical Pearl:**
The high mortality rate associated with Diphtheria is primarily due to respiratory complications. Vaccination is essential to prevent this life-threatening disease and protect against its severe consequences. Prompt diagnosis and treatment with antibiotics can reduce mortality rates significantly.