## **Core Concept**
The question tests knowledge of vector-borne viral infections, specifically focusing on the mode of transmission. Ticks are known vectors for several viral diseases.

## **Why the Correct Answer is Right**
The correct answer, , is transmitted by ticks. This virus causes Crimean-Congo Hemorrhagic Fever (CCHF), a severe tick-borne viral disease. The primary vectors of CCHF virus are *Hyalomma* ticks, which are found in various regions including Africa, Asia, and Eastern Europe. The virus is transmitted to humans through the bite of infected ticks or through contact with infected animals or people.

## **Why Each Wrong Option is Incorrect**
* **Option A:** - This option is incorrect because is primarily transmitted through respiratory droplets, contact with infected birds, or their droppings, not by ticks.
* **Option B:** - This option is incorrect as is mainly spread through the fecal-oral route, not through tick bites.
* **Option D:** - This option is incorrect because is transmitted to humans primarily through the bite of an infected *Aedes* mosquito, not ticks.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that tick-borne viral infections can have high mortality rates and require prompt treatment. For Crimean-Congo Hemorrhagic Fever, early diagnosis and supportive care are crucial.

## **Correct Answer:** .