UN Sec-Gen on World Health Day.
D003141:Communicable Diseases; D004194:Disease; D004467:Economics; D006301:Health Services Needs and Demand; D007239:Infections; D007390:International Agencies; D009938:Organizations; D014480:United Nations; D014944:World Health Organization
Communicable Diseases; Diseases; Economic Factors; Infections; International Agencies; Needs; Organizations; Un; Who; World