Rear Adm. Ziemer distributes an LLIN to a young girl who just received two vaccinations, vitamin A, and de-worming medication. Parasitic worms hinder growth and development in children and afflict more than 2 billion people worldwide with lifelong infections. Children are often infected after weaning and are constantly re-infected for the rest their lives. Administering de-worming medicine is a simple, safe, low-cost, and efficient treatment to control infection.