ALLERGY, RESPIRATORY
Using Music and Sports to Improve Kids' Asthma
New Spray Could Benefit Cystic Fibrosis Patients
Know Your Asthma Triggers
ALTERNATIVE MEDICINE
Could Chinese Herb Be a Natural Viagra?
Spot light on Dani Antman New Lionheart teacher
Traditional Chinese Therapy May Help Ease Eczema
ANIMAL CARE
'Comfort Dogs' Come to Emotional Rescue
Beware of Dog Bites
Safe Toys for Dogs
BONES & JOINTS
Exercise Key Player in Knee Replacement Recovery
Genes May Help Drive Rotator Cuff Injury
Most Women With Osteoporosis Unaware of Raised Fracture Risk
CANCER
Exercise Cuts Lung Cancer Risk in Ex-Smokers by 45%
Meditation May Reduce Stress in Breast Cancer Patients
Some Spices Cut Cancer Risk That Comes With Grilled Burgers
CAREGIVING
Late-Life Fatherhood May Lower Child's Intelligence
Babies Born in High Pollen Months at Wheezing Risk
Mild Flu Season Coming to a Close
CIRCULATORY SYSTEM
High Blood Fat Levels Common in Americans
Firefighters Have Narrower-Than-Normal Arteries, Study Finds
Obesity Linked to Heart Failure Risk
COSMETIC
The Acne Drug Accutane More Than Doubles Depression Risk
Science May Banish Bad Hair Days
Mouse Study Finds Molecule That Tells Hair to Grow
DENTAL, ORAL
Health Tip: At Risk for Gingivitis
Good Oral Hygiene May Protect Against Heart Infections
Acid Drinks Blamed for Increase in Tooth Erosion
DIABETES
Older Diabetics With Depression Face Higher Death Rate
Lifestyle Factors Tied to Older Adults' Diabetes Risk
Arthritis Hits More Than Half of Diabetics
DIET, NUTRITION
Low Vitamin A, C Intake Tied to Asthma Risk
Olive Oil May Be Key to Mediterranean Diet's Benefits
Brown Rice Bests White for Diabetes Prevention
DISABILITIES
Review Finds Marijuana May Help MS Patients
Could Your Cell Phone Help Shield You From Alzheimer's?
ENVIRONMENTAL HEALTH
Greenhouse Gases Hazardous to Your Health
Flame-Retardant Chemical Linked to Conception Problems
Showerheads Harbor a Bounty of Germs
EYE CARE, VISION
Music Can Help Restore Stroke Patients' Sight
Vision Test for Young Children Called Unreliable
Eye Disease, Cognitive Decline Linked in Study
FITNESS
Weak Muscles May Cause 'Runner's Knee'
Tai Chi and Qigong Offer Many Health Benefits: Review
Community Exercise Programs Boost Seniors' Strength
GASTROINTESTINAL PROBLEMS
Gum Chewing May Speed Colon Surgery Recovery
Olive Oil May Protect Against Bowel Disease
Intestinal Bacteria Trigger Immune Response
GENERAL HEALTH
Uncover Why Turmeric Helps You Heal
Natural Oils Help Lower Body Fat For Some
Eating Lots Of Vegetables, Olive Oil May Extend Life
HEAD & NECK
Zen May Thicken Brain, Thwart Pain
Many Children Will Outgrow Headaches
Ski Helmets Encouraged for All
HEALTH & TECHNOLOGY
'Cell Phone Elbow' -- A New Ill for the Wired Age
Airport Full Body Scanners Pose No Health Threat: Experts
Combating Myths About Seasonal Allergies
HEARING
Summer Sounds Can Lead to Hearing Loss
Noise Hurts Men's Hearing More, Study Shows
HEART & CARDIOVASCULAR
A Little Chocolate May Do the Heart Good
Fondness for Fish Keeps Japanese Hearts Healthy
Fish Oil Supplements Help With Heart Failure
INFECTIOUS DISEASE
Dry Weather Boosts Odds of Flu Outbreaks
Hand Washing 10 Times a Day May Help Keep Flu Away
Older Adults May Have Some Immunity to Swine Flu
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
School Phys. Ed. Injuries Up 150 Percent
Music May Temper Pain in Preemies
Guard Kids' Eyes Against Long-Term Sun Damage
MEN'S HEALTH
Low Iron Levels Cut Cancer Risk in Men With PAD
Vigorous Exercise Cuts Stroke Risk for Men, Not Women
Whole Grains, Bran May Fight Hypertension in Men
MENTAL HEALTH
Cinnamon Breaks Up Brain Plaques, May Hold Key to Fighting Alzheimer’s
Bullying Seems to Affect Kids Years Later
A Little Alcohol May Stave Off Alzheimer's
PAIN
Alleviating Rheumatoid Arthritis
Tai Chi May Help Ease Fibromyalgia
Are We Exercising Pain Away? Not So Much.
PHYSICAL THERAPY
PREGNANCY
Music of Mozart Soothes the Preemie Baby
Breast-Feeding May Protect a Woman's Heart
Expectant Mom's Exercise Keeps Newborn's Birth Weight Down
SENIORS
15-Point Test Gauges Alzheimer's Risk
The Healthy Habits of Centenarians
Nighttime Urination Linked to Higher Death Rate Among Elderly
SEXUAL HEALTH
SLEEP DISORDERS
Better Sleep, Grades Seem to Go Up
Meditation May Help Put Primary Insomnia to Bed
Pay Attention to Signs That Say You're Too Fatigued to Drive
WOMEN'S HEALTH
Flame-Retardant Chemical Linked to Conception Problems
Active Young Women Need Calcium, Vitamin D
For Women, Moderate Midlife Drinking Linked to Healthier Old Age
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U.S. Prepares for Possible Return of Swine Flu in Fall

TUESDAY, May 26 (HealthDay News) -- As the H1N1 swine flu virus continues to wax and wane in different parts of the country, U.S. health officials said Tuesday that they were working as fast as possible to learn as much as they can about the novel pathogen before the return of the flu season in the fall.

The reason for the urgency: Some past pandemics were preceded by "herald waves" of a flu strain that surfaced at the end of one flu season, only to return with far greater consequences the next flu season.

"We are mindful that pandemics of influenza have sometimes come in waves," Dr. Anne Schuchat, the U.S. Centers for Disease Control and Prevention's interim deputy director for science and public health program, said during an afternoon news conference. "The very severe 1918 pandemic had a moderate herald wave in the spring and a much more severe second wave in the fall. So that very terrible experience of 1918 is in our minds."

Some estimates have placed the worldwide death toll from the 1918 outbreak -- often referred to as the "Spanish Flu" -- as high as 40 million people.

"We are really on a fast track, over the next to eight to 10 weeks, to learn as much as we can as this virus heads to the Southern Hemisphere [where flu season is just beginning] and to strengthen our planning for the surge of illness that we expect to experience here in the fall," Schuchat added.

Scientists will be looking to see if the H1N1 swine flu virus mutates or becomes resistant to antiviral medications, or is more easily spread among people, she said.

Schuchat said there's no way to tell now if the H1N1 virus will be more virulent when -- and if -- it returns to the Northern Hemisphere with the approach of winter. "Whether it will dominate among the seasonal flu viruses or whether it will disappear is not predictable right now," she said.

To date there have been 6,764 confirmed and probable cases of infection in the United States, Schuchat said, adding that most of the cases have been mild and patients have recovered quickly.

The CDC is reporting 11 deaths linked to the swine flu, and all of the victims had underlying health problems before they were infected. Illinois health officials reported the death of a Chicago area man over the weekend.

Canadian officials said Monday that a Toronto man who had swine flu died Saturday, and he also suffered from a chronic medical condition.

The World Health Organization said Tuesday that 46 countries have reported 12,954 cases of H1N1 swine flu infection, including 92 deaths, most of them in Mexico, where the outbreak began.

The CDC said last week that progress was being made toward the development of an H1N1 swine flu vaccine, with two promising candidate viruses for use in such a shot. And U.S. Department of Health and Human Services Secretary Kathleen Sebelius said Friday that the federal government was allocating $1 billion to the search for a swine flu vaccine.

In the United States, most cases of the swine flu continue to be no worse than seasonal flu. Testing has found that the swine flu virus remains susceptible to two common antiviral drugs, Tamiflu and Relenza, according to the CDC.

The CDC says some older people may have partial immunity to the H1N1 swine flu virus because of possible exposure to another H1N1 flu strain circulating prior to 1957. So far, 64 percent of cases of swine flu infection in the United States have been among people aged 5 to 24, while only 1 percent involves people over 65, officials said last week.