Yellow fever and dengue hemorrhagic fever is transmitted by

Options

A. Culex
B. Adees
C. Anopheles
D. Bed bug

Answer

To answer the question about the transmission of yellow fever and dengue hemorrhagic fever, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Diseases**: Recognize that yellow fever and dengue hemorrhagic fever are both viral diseases.

2. **Understand the Transmission**: Both diseases are transmitted through vectors. Vectors are organisms that carry and transmit pathogens to other living organisms.

3. **Identify the Vectors**:
- For yellow fever, the primary vector is the **Aedes aegypti** mosquito.
- For dengue hemorrhagic fever, the primary vector is the **Aedes albopictus** mosquito.

4. **Conclude the Common Vector**: Since both diseases are transmitted by mosquitoes from the Aedes genus, we can conclude that the transmission for both diseases is through mosquitoes.

5. **Final Answer**: Therefore, the answer to the question is that yellow fever and dengue hemorrhagic fever are transmitted by **Aedes mosquitoes**.