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Health Alerts
Flu Fact Sheet
The following information was provided by U.S. Centers for Disease Control and
Prevention as of December 11, 2003. For more information, visit
www.cdc.gov/flu, or call the National Immunization Hotline at
(800) 232-2522 (English), (800) 232-0233 (español), or (800) 243-7889 (TTY).
About Flu
Influenza (commonly called “the flu”) is a contagious respiratory illness caused
by influenza viruses. Infection with influenza viruses can result in severe
illness and life-threatening complications. An estimated 10% to 20% of U.S.
residents get the flu each year: an average of 114,000 people are hospitalized
for flu-related complications and 36,000 Americans die each year from
complications of flu.
Symptoms of Flu
Symptoms of flu include fever (usually high), headache, extreme tiredness, dry
cough, sore throat, runny or stuffy nose, and muscle aches. Gastro-intestinal
symptoms, such as nausea, vomiting, and diarrhea, are much more common among
children than adults.
Spread of Flu
Influenza viruses are spread when a person who has the flu coughs, sneezes, or
speaks and spreads virus into the air, and other people inhale the virus. When
these viruses enter the nose, throat, or lungs of a person, they begin to
multiply, causing symptoms of the flu. The viruses can also be spread when a
person touches a surface with flu viruses on it (for example, a door handle) and
then touches his or her nose or mouth.
A person who is sick with the flu can spread viruses – that means they are
contagious. Adults may be contagious from 1 day before developing
symptoms to up to 7 days after getting sick. Children can be contagious
for longer than 7 days.
Preventing Flu
Vaccination: The single best way to prevent the flu is to get vaccinated
each fall. In the absence of vaccine, however, there are other ways to protect
against flu.
Antiviral Medications: Three antiviral drugs (amantadine, rimantadine,
and oseltamivir) are approved and commercially available for use in preventing
flu. All of these medications are prescription drugs, and a doctor should be
consulted before the drugs are used for preventing the flu.
Other Habits for Good Health
The following steps may help prevent the spread of respiratory illnesses like
flu:
- Avoid close contact
Avoid close contact with people who are sick. When you are sick, keep your
distance from others to protect them from getting sick too.
- Stay home when you are sick
If possible, stay home from work, school, and errands when you are sick. You
will help prevent others from catching your illness.
- Cover your mouth and nose
Cover your mouth and nose with a tissue when coughing or sneezing. It may
prevent those around you from getting sick.
- Clean your hands
Washing your hands often will help protect you from germs.
- Avoid touching your eyes, nose or mouth
Germs are often spread when a person touches something that is contaminated
with germs and then touches his or her eyes, nose, or mouth.
Diagnosing the Flu
Tests are available that can determine if you have the flu as long as you are
tested within the first 2 or 3 days after your symptoms begin. In addition, a
doctor's examination may be needed to determine whether a person has another
infection that is a complication of the flu.
At Special Risk of Complications From Flu
Certain people are at increased risk for serious complications from the flu.
This group includes people age 65 years and older and people of any age with
chronic medical conditions. Pregnant women and children between 6 months and 23
months of age also are at increased risk from flu complications.
Complications From Flu
Some of the complications caused by flu include bacterial pneumonia,
dehydration, and worsening of chronic medical conditions, such as congestive
heart failure, asthma, or diabetes. Children may get sinus problems and ear
infections
.
Treating the Flu
Antiviral Medications: Four antiviral drugs (amantadine, rimantadine, zanamavir
and oseltamivir) have been approved for treatment of the flu. All of these must
be prescribed by a doctor. Antiviral treatment lasts for 5 days and must be
started within the first 2 days of illness.
What to Do If You Get Sick This Flu Season
If you develop the flu, it is advisable to get plenty of rest, drink a lot of
liquids, and avoid using alcohol and tobacco. Also, you can take medications to
relieve the symptoms of flu (but never give aspirin to children or teenagers who
have flu-like symptoms – and particularly fever – without first speaking to your
doctor.)
If, however, your flu symptoms are unusually severe (for example, if you are
having trouble breathing), you should consult your health-care provider right
away.
If you are at special risk from complications of flu, you should consult your
health-care provider when your flu symptoms begin. This includes people 65
years or older, people with chronic medical conditions, pregnant women, or
children . Your doctor may choose to use certain antiviral drugs to treat the
flu.
More
Flu Information
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