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.
... sibilants.
(Note: The long vowels are held about twice as long as their short counterparts. Also, there exists a third, extra-long length for most vowels, which is used ...