Question

Causal organism of dengue is
A) Arbovirus
B) Wuchereria
C) Anopheles
D) Culex

Answer 1

As we know very well that Dengue is transmitted by an arthropod vector and mostly occurs in tropical and subtropical regions of the world. Severe form of dengue is dengue hemorrhagic fever which can cause severe bleeding, shock and ultimately death.

Complete answer:
We are very well aware of the fact that dengue is a mosquito borne disease caused by the dengue virus. It is basically spread by several species of Aedes mosquito, principally the Aedes aegypti.

As we know that dengue is transmitted by an arthropod vector (mosquito) and we also know that Arbovirus is an informal name that is used to refer to any viruses that are transmitted by an arthropod vectors therefore the causative organism for dengue is Arbovirus.

Wuchereria is a filarial worm and its adult lives in the lymph nodes of humans. Its hosts are human and culex mosquitoes. Its larva is called microfilaria which moves into the superficial blood vessel at night and this time matches with the biting time of Culex. Culex takes it and transfers it into another healthy person.

Culex is a mosquito genus and several species of this genus serves as a vector of one or more than one diseases of birds, animals and human beings. They are the vectors for diseases like filariasis, avian malaria, West Nile virus etc.

Anopheles is also a mosquito genus and is also known as Malaria mosquito species as it is the primary vector of parasites causing malaria in humans. Female Anopheles mosquito transmits Malaria to humans by the. It takes blood as a meal and produces eggs and then bites another human and transmits its larva.

Hence, from the above explanation we can say that the correct answer is (A).

Note: Aedes mosquito is a vector of three diseases including Dengue fever, Yellow fever and Chikungunya. Dengue can be confirmed by the Tourniquet test. Symptoms include high fever, rashes, muscle pain and joint pain.