How many of the following diseases are vector borne Malaria, Dengue, Common cold, Filariasis, Chikungunya, Ascariasis, Typhoid, Pneumonia

Options

A. Seven
B. Six
C. Five
D. Four

Answer

To determine how many of the listed diseases are vector-borne, we will analyze each disease one by one.

1. **Malaria**:
- Malaria is caused by the Plasmodium parasite, which is transmitted by the female Anopheles mosquito.
- **Conclusion**: Malaria is a vector-borne disease.

2. **Dengue**:
- Dengue fever is caused by the dengue virus, which is transmitted by Aedes mosquitoes, primarily Aedes aegypti.
- **Conclusion**: Dengue is a vector-borne disease.

3. **Common Cold**:
- The common cold is caused by viruses, such as rhinoviruses, and is transmitted through respiratory droplets (sneezing, coughing) and not by a vector.
- **Conclusion**: Common cold is NOT a vector-borne disease.

4. **Filariasis**:
- Filariasis is caused by filarial worms, such as Wuchereria bancrofti, which are transmitted by mosquitoes, including Aedes and Culex species.
- **Conclusion**: Filariasis is a vector-borne disease.

5. **Chikungunya**:
- Chikungunya is caused by the chikungunya virus, which is also transmitted by Aedes mosquitoes.
- **Conclusion**: Chikungunya is a vector-borne disease.

6. **Ascariasis**:
- Ascariasis is caused by the Ascaris lumbricoides worm and is transmitted through ingestion of contaminated food or water, not by a vector.
- **Conclusion**: Ascariasis is NOT a vector-borne disease.

7. **Typhoid**:
- Typhoid fever is caused by Salmonella typhi and is transmitted through contaminated food and water, not by a vector.
- **Conclusion**: Typhoid is NOT a vector-borne disease.

8. **Pneumonia**:
- Pneumonia is caused by various pathogens, including bacteria like Streptococcus pneumoniae, and is transmitted through respiratory droplets. It is not transmitted by a vector.
- **Conclusion**: Pneumonia is NOT a vector-borne disease.

Now, let's summarize the findings:

- Vector-borne diseases from the list:
- Malaria
- Dengue
- Filariasis
- Chikungunya

Total vector-borne diseases: **4**

Therefore, the answer to the question is **4**.