The document discusses various agencies and organizations involved in global health at international, national, and local levels. At the international level, it mentions the World Health Organization (WHO) as the leading agency and coordinator of health efforts within the UN. It also discusses the roles of transnational corporations (TNCs) like GlaxoSmithKline, Pfizer, and AstraZeneca in conducting medical research and distributing medicines globally. Non-governmental organizations (NGOs) involved include Doctors Without Borders, Oxfam, and others. Nationally, it provides examples of health systems like the UK's National Health Service (NHS), France, the USA, Cuba, China, and others. Locally, examples discussed