Health topics Allergies Asthma Colds Lungs Pneumonia More topic centers Health news and features Parents: How to avoid your child's illness Learn the signs of asthma in kids Understanding allergic asthma What is asthma? Using a peak-flow meter More news and features Health tools Antibiotics quiz 5 facts about the common cold What vaccines does your child need? Signs of lung disease How to set up a sickroom More health tools