Filariidae is a family of parasitic worms known as filarial worms. These organisms primarily infect mammals, including humans, and are transmitted through the bites of infected mosquitoes or flies. They can cause various diseases, such as lymphatic filariasis, which leads to severe swelling and disability. The life cycle of Filariidae involves multiple stages, including larvae and adult worms. Once inside the host, they can reside in the lymphatic system or other tissues, where they reproduce and can cause significant health issues. Effective prevention and treatment methods are essential to control the diseases caused by these parasites.