Lymphatic filariasis and fascioliasis are parasitic infections. Lymphatic filariasis is caused by filarial nematodes transmitted via mosquitoes and can lead to elephantiasis. It is most prevalent in tropical areas. Fascioliasis is caused by liver flukes Fasciola hepatica and F. gigantica. Humans and ruminants can be infected by ingesting metacercariae in contaminated food or water. Symptoms include fever, abdominal pain, and liver abnormalities. Diagnosis involves detecting microfilariae or eggs in samples. Treatment involves anthelmintic drugs like triclabendazole.