Moality rate of measles in developing countries?
**Core Concept**
Measles is a highly contagious viral infection that affects millions of people worldwide, especially in developing countries. The mortality rate of measles is a critical public health indicator that reflects the effectiveness of vaccination programs and healthcare infrastructure.
**Why the Correct Answer is Right**
Measles mortality rates are significantly higher in developing countries due to factors such as malnutrition, inadequate healthcare, and lack of access to vaccination. According to the World Health Organization (WHO), measles is responsible for approximately 200,000 deaths annually, with the majority occurring in developing countries. The measles virus attacks the respiratory system, causing pneumonia, bronchopneumonia, and laryngotracheobronchitis, which can lead to severe complications and death.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not accurately reflect the mortality rate of measles in developing countries. The actual mortality rate is significantly higher than what is stated here.
**Option B:** This option is incorrect as it implies that measles mortality rates are similar in developed and developing countries. However, the WHO reports that measles mortality rates are 10-20 times higher in developing countries compared to developed countries.
**Option C:** This option is incorrect as it suggests that measles mortality rates have decreased significantly in developing countries. While vaccination efforts have led to a decline in measles cases, the mortality rate remains a concern in many developing countries.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that measles is a leading cause of vaccine-preventable deaths in children under the age of 5, particularly in developing countries. The measles vaccine is highly effective, and widespread vaccination efforts have led to a significant decline in measles cases and mortality rates in many parts of the world.
**Correct Answer: D. 0.1-3%**