North Atlantic right whales (Eubalaena glacialis) are big, but they're not the biggest whales. That distinction goes to the blue whale (Balaenoptera musculus), the largest animal on Earth. The orca's size of up to 31 feet (9.4 meters) makes it the largest dolphin. The sperm whale, on the other hand, may not be the biggest whale, but it has the biggest brain to have ever existed on Earth. A comparison chart of whale sizes helps put it all in perspective!
Chikungunya fever is caused by a virus that is spread to people through the bite of infected mosquitoes. Like Dengue, it is transmitted by Aedes mosquitoes, especially Aedes aegypti (the yellow fever mosquito) and Aedes albopictus (the Asian tiger mosquito).
Lymphatic filariasis (referred to as LF and also known as elephantiasis) is a mosquito-borne disease that is caused by parasitic filarial nematodes. Though infection usually is acquired in childhood, the grotesquely disfiguring effects of LF is greatest in adults.hen a mosquito with infective stage larvae bites a person, parasites enter the body and migrate to the lymphatic vessels. In the lymphatic system, the larvae develop into adult worms. Infection causes improper functioning of the lymph system, which leads to fluid build-up and swelling (lymphedema).