This handbook is a practical guide for primary care providers and other clinicians who treat upper and lower respiratory tract infections. This revised edition has current recommendations for appropriate use of antibiotics. Coverage includes recent findings on antibiotic resistance by Streptococcus pnemoniae; new guidelines from the Infectious Disease Society of America for managing community-acquired pneumonia; and new recommendations from the Centers for Disease Control and Prevention for managing pharyngitis and sinusitis. Information on new antibiotics is included.