Which of the following is a vector for Dengue fever
**Core Concept**
Dengue fever is a mosquito-borne viral disease caused by the dengue virus (DENV), transmitted primarily through the bite of an infected Aedes species mosquito. The virus is a flavivirus that replicates within the mosquito and is then transmitted to humans through a bite.
**Why the Correct Answer is Right**
The Aedes mosquito, specifically Aedes aegypti and Aedes albopictus, is the primary vector for dengue fever. These mosquitoes are found in tropical and subtropical regions worldwide and are capable of transmitting the virus from person to person through their saliva during feeding. The virus replicates within the mosquito's salivary glands, and the infected mosquito can transmit the virus to humans through a single bite.
**Why Each Wrong Option is Incorrect**
* **Option A:** Mosquitoes in the Culex genus are vectors for other diseases such as filariasis and Japanese encephalitis, but not dengue fever.
* **Option B:** Ticks are vectors for diseases such as Lyme disease and Rocky Mountain spotted fever, but not dengue fever.
* **Option D:** Flies are not typically considered vectors for dengue fever, although they can transmit other diseases.
**Clinical Pearl / High-Yield Fact**
Aedes mosquitoes are often found near standing water and can lay eggs in small containers, making them a common problem in urban areas. Eliminating standing water and using mosquito repellents can help prevent dengue fever transmission.
**Correct Answer:** C. Aedes mosquito.