Top stories in health and medicine, November 28, 2012

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1. Pertussis Vaccine Effects May Fade Over Time. The acellular vaccine against whooping cough appears to become less effective as the time from the last childhood vaccination increases.

2. Clues to Autism Emerge from Brain Imaging. Young adults with autism spectrum disorder (ASD) had significant variation in cortical volume, thickness, and surface area compared with an age-matched control group.

3. Screening Athletes: Cost Tops Benefit. A nationwide ECG screening program for young athletes in the U.S. would save lives but would cost billions of dollars.

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