Research Järvinen-Seppo Laboratory The Division of Allergy & Immunology conducts research through the Järvinen-Seppo Laboratory, which studies the immunologic factors present in human milk and how those factors may modify developing immune systems for infants and their oral tolerance to foods. For more information on our research program and our team members, please visit the Järvinen-Seppo Lab site. The Preventive Care Program for Urban Children with Asthma Asthma is the most common chronic illness of childhood. While national guidelines recommend daily preventive medications for all children with moderate to severe asthma, studies indicate that many children in the U.S. who should receive preventive medications are not receiving them. Dr. Jill Halterman's work is to improve preventive care and decrease harmful environmental exposures (specifically secondhand smoke) for young urban children with asthma through various programs. Learn more about the Preventive Care Program for Urban Children with Asthma.