DAVID S. GREGORY, M.D.

Incomplete immunization and declining immunity after pertussis vaccination have contributed to a significant increase in adolescent and adult pertussis and complications in infants. Patients with suspected pertussis should undergo laboratory testing to confirm the diagnosis, although physicians should not await test results before initiating treatment and reporting cases to the health department.

Patient information: "Whooping Cough: What You Should Know," p. 427

Editorial "Preventing Pertussis in Infants by Vaccinating Adults," p. 382

RUSSELL G. ROBERTSON, M.D., WILLIAM J. GEIGER M.D., and NANCY B. DAVIS, M.D.

These rare, slow-growing tumors of the neuroendocrine system are becoming more common. Family physicians should know the signs and symptoms of carcinoid tumors and carcinoid syndrome.

ANN YELMOKAS MCDERMOTT, PH.D., M.S., L.N., and HEATHER MERNITZ, M.S.

With a basic knowledge of exercise guidelines and counseling strategies, physicians can promote the lifestyle changes that are essential for healthy aging.

CHRISTOPHER H. WARNER, MAJ, MC, USA, WILLIAM BOBO, LCDR, MC, USN, CAROLYNN WARNER, MAJ, MC, USA, SARA REID, CPT, USAF, MC, and JAMES RACHAL, MAJ, USAF, MC

Antidepressant discontinuation syndrome becomes more likely the longer a patient has taken antidepressant medication. Symptoms usually are mild and short-lived and are rapidly extinguished with reinstitution of antidepressant medication.

Patient information: "Antidepressant Discontinuation Syndrome: What You Should Know," p. 457