Health & Medicine What is the most harmful worm to humans? February 4, 2026 by Tanp | Leave a Comment What is the Most Harmful Worm to Humans? The most harmful worm to humans is the parasitic roundworm known as the Guinea worm (Dracunculus medinensis). This worm causes Guinea worm disease, which is a debilitating condition that can lead to severe pain, secondary infections, and disability. While efforts to eradicate this disease have been largely […] Read more ยป