Microbiology - Microbes: Ascaris lumbricoides

Ascaris lumbricoides is a parasitic roundworm that lives in the intestines of infected individuals and causes ascariasis. It is more common in areas with poor hygiene and sanitation practices, where people are more likely to come in contact with contaminated food, water, and soil. Ascaris eggs are passed in the feces of the infected person. An accidental ingestion of those eggs causes ascariasis. Immature worms or larvae can infect the lungs causing pneumonia-like symptoms. Adult worms remain in the intestines and cause symptoms such as abdominal pain, nausea, vomiting, and diarrhea.