NIH Grants: International Research in Infectious Diseases, including AIDS (R01)

This is for applicants from “resource-constrained” countries (list is available under Section III-1.)
U.S. institutions may collaborate, but cannot account for more than 20% of the funds and the grant must be submitted by the foreign entity.

Site detail:

US National Institute for Health, National Institute of Allergy and Infectious Diseases (NIAID)