The Centers for Disease Control and Prevention (CDC) is recognized as the lead United Statesagency[?] for protecting the health and safety of people by providing credible information to enhance health decisions, and promoting health through strong partnerships. CDC serves as a national focus for developing and applying disease prevention and control (especially infectious diseases), environmental health[?], and health promotion[?] and education[?] activities designed to improve the health of the people of the United States.
... explored Lake Victoria, Lake Tanganyika and the Congo River
William Stairs, (1863-1892), Victorian explorer, discovered one source of the Nile River, first non-African to ...