Explore the recorded discovery and history of Ascaris lumbricoides, with source links and stated limits.
A large intestinal roundworm with eggs, migrating larvae and adult stages. Light infections may have few symptoms. Heavy infections can cause intestinal obstruction and affect childhood growth.
The selected sources do not establish the first person ever infected. Naming, recognition and biological origin are separate questions.
Source check: 2026-09-21. Educational content; independent scientific review remains pending.