Research supported and conducted by the National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), strives to better understand, treat, and ultimately prevent immunologic, infectious, and allergic diseases. The NIAID Division of Allergy, Immunology, and Transplantation (DAIT) supports extramural basic, pre-clinical and clinical research focusing on immune-mediated diseases through a variety of research grants and contracts.