**Core Concept**
Arboviruses are a group of viruses transmitted primarily through the bites of infected arthropods, such as mosquitoes and ticks. These viruses cause a wide range of diseases in humans, including yellow fever, dengue, Zika, and chikungunya.
**Why the Correct Answer is Right**
Arboviruses replicate within the arthropod vector and are then transmitted to humans through a bite. The virus is transmitted to the human host in a replication-competent state, allowing it to establish infection. The primary vector-borne diseases caused by arboviruses include flaviviruses (yellow fever, dengue, Zika), alphaviruses (chikungunya), and bunyaviruses (Crimean-Congo hemorrhagic fever).
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is a statement that is true regarding arboviruses.
**Option B:** This option is incorrect because it is a statement that is true regarding arboviruses.
**Option C:** This option is incorrect because it is a statement that is true regarding arboviruses.
**Clinical Pearl / High-Yield Fact**
Arboviruses are a significant public health concern, with many diseases caused by these viruses exhibiting high morbidity and mortality rates. The primary mode of transmission is through the bite of an infected arthropod vector.
**Correct Answer:** D
Free Medical MCQs Β· NEET PG Β· USMLE Β· AIIMS
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