All the following viruses are transmitted by ahropod vectors except:
**Core Concept**
The transmission of viruses by arthropod vectors is a complex process involving multiple factors, including the virus itself, the arthropod vector, and the host. This process is mediated by various molecular interactions between the virus and the arthropod vector.
**Why the Correct Answer is Right**
The correct answer is a virus that is not transmitted by an arthropod vector. Arthropod-borne viruses, also known as arboviruses, are transmitted by mosquitoes and ticks. These viruses typically replicate within the arthropod vector before being transmitted to a new host. Examples of arboviruses include dengue virus, Zika virus, and yellow fever virus.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because this virus is transmitted by an arthropod vector, specifically mosquitoes.
* **Option B:** This option is incorrect because this virus is transmitted by an arthropod vector, specifically ticks.
* **Option C:** This option is incorrect because this virus is transmitted by an arthropod vector, specifically mosquitoes.
**Clinical Pearl / High-Yield Fact**
Arthropod-borne viruses can be transmitted through the bite of an infected arthropod, and the risk of transmission is increased by the presence of mosquito breeding sites and tick habitats.
**Correct Answer:** D.