Additional Study Information: The reason for this nationwide study is to help us learn if treatment with German cockroach extract, given as allergy shots, given along with standard asthma care makes children less likely to have asthma symptoms. The study will take up to 36 months. Study visits will include questionnaires, a physical examination, an allergy skin test, breathing tests, and blood, nasal collections, and allergy shots. You will be reimbursed for each completed study visit and your child will receive a gift.