Which of the following is not spread by Aedes mosquito –
**Core Concept**
The transmission of diseases by Aedes mosquitoes is a significant public health concern, particularly in tropical and subtropical regions. Aedes mosquitoes are known to spread various viral and bacterial diseases, including dengue fever, chikungunya, and Zika virus.
**Why the Correct Answer is Right**
Aedes mosquitoes are primarily responsible for spreading dengue fever, chikungunya, and Zika virus. These diseases are caused by specific viruses that are transmitted through the bite of an infected Aedes mosquito. The primary vector for these diseases is Aedes aegypti, which is a highly efficient transmitter of these viruses.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because dengue fever is indeed spread by Aedes mosquitoes. Aedes aegypti is the primary vector for dengue fever, and it is a major public health concern in many parts of the world.
**Option B:** Chikungunya is also spread by Aedes mosquitoes, specifically Aedes aegypti and Aedes albopictus. This mosquito-borne disease is characterized by severe joint pain and swelling.
**Option C:** Zika virus is another disease that is spread by Aedes mosquitoes, primarily Aedes aegypti. Zika virus is a significant public health concern due to its association with birth defects, such as microcephaly.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that Aedes mosquitoes are the primary vectors for dengue fever, chikungunya, and Zika virus. These diseases are preventable through the use of insecticide-treated bed nets, window screens, and eliminating standing water around homes.
**Correct Answer:** D.