This document discusses intestinal parasitic worms (geohelminths) that infect hundreds of millions of people worldwide. Parasitic infections can spread through contaminated food, water, fruits, vegetables, grains, poultry, fish, meat, or from pets to owners. Children are more susceptible as they spend more time outdoors. Heavy infections can cause bowel obstruction or anemia from blood loss. Chronic infections can lead to long-term physical and mental development issues and even death in severe cases. The document also lists 4 students and shows testing results, with some students and family members testing positive and others testing negative for parasitic infections.