1 MosquitoesMosquitoes are one of the most deadliest insects on Earth. There are over 3000 species of mosquitoes that can be discovered all over the world. Mosquitoes carry malaria germs from one place to another and they transmit germs into the blood of victim by biting. WHO estimated that this miniature insect causes 1 million death every year by transmitting diseases like Malaria and Dengue.
2 Tsetse flyNative to Africa, Tsetse Fly is a small insect that belongs to the housefly family. Tsetse fly can reach 0.2 to 0.6 inches in length and mainly feed on the blood of vertebrates. This flies can transmit parasites that induce sleeping sickness in humans and nagana (similar type of disease) in domestic animals. Swollen lymph glands, headache, fever and emaciation of the body are typical symptoms of the sleeping sickness. This disease kills 250.000 to 300.000 people each year.