Which of the following disease is not caused by a mosquito bite ?

Hepatitis 

The correct answer is Option (4) – Hepatitis

Hepatitis is not caused by a mosquito bite.

• Elephantiasis, Dengue, and Malaria are all diseases transmitted by mosquito bites. Elephantiasis is caused by filarial worms transmitted by mosquitoes, Dengue is caused by the Dengue virus transmitted by Aedes mosquitoes, and Malaria is caused by Plasmodium parasites transmitted by Anopheles mosquitoes.

Hepatitis is a viral infection of the liver and is typically transmitted through exposure to infected blood or bodily fluids, contaminated food or water, or through sexual contact. It is not transmitted by mosquito bites.