US National Institute of Allergy and Infectious Diseases
As part of the US Public Health Service:
"The National Institute of Allergy and Infectious Diseases (NIAID) is a component of the National Institutes of Health (NIH)"
"NIAID conducts and supports research that strives to understand, treat, and ultimately prevent the myriad infectious, immunologic, and allergic diseases that threaten hundreds of millions of people worldwide."
Source: NIAID website