- Wuchereria bancrofti is a parasitic roundworm that causes lymphatic filariasis. It has a complex life cycle involving humans and mosquitoes. Microfilariae develop in mosquitoes and infective third stage larvae are transmitted to humans through mosquito bites. - Loa loa is a parasitic roundworm found in West and Central Africa. It is transmitted by day-biting deer flies and adults can migrate through subcutaneous tissues or reside in the eye, causing inflammation. - Onchocerca volvulus causes river blindness and is transmitted by black flies. It occurs mainly in tropical Africa and the Americas. Adult worms live in subcutaneous nodules and release unshe