The National Institute of Allergy and Infectious Diseases (NIAID) is a prominent research center in the United States that focuses on understanding, preventing, and treating infectious diseases and allergies. Some synonyms for NIAID are National Allergy and Infectious Diseases Research Center, National Institute of Allergy and Infectious Diseases, NIAID Research Institute, and National Institute for Allergy and Infectious Diseases. These synonyms are used interchangeably to refer to this pioneering scientific institution that provides funding and resources to scientists and researchers worldwide to advance the prevention and treatment of infectious diseases and allergies. NIAID's research has led to breakthroughs in critical areas like HIV/AIDS and COVID-19.