Reading: Health Report

• W.H.O. Seeks Worldwide Campaign Against Cancer

• Swedish Study Finds That Placebos Can Help Calm Emotions

• Number of Americans Living with H.I.V. Estimated Above 1 Million

• Work-Related Accidents Increasing in Some Developing Countries

• Study Says Breast-Cancer Treatments Increase Survival Rates

• Study Suggests Laughter Is Good for the Heart

• Study: Sunshine and Vitamin D May Improve Lung Cancer Survival

• More Distance on the Road to Ending Polio

• A Look Behind the Disease: Meningitis