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What is influenza?
Influenza (also called "the flu") is a viral infection in the nose, throat and lungs.
About 10% to 20% of Americans get the flu each year. Some people get very sick.
Each year, about 130,000 people go to a hospital with the flu, and 20,000 people
die because of the flu and complications
The flu may cause fever, cough, sore throat, a runny or stuffy nose, headache, muscle
aches and tiredness. Some people describe the flu as being like the worst cold of
their life. Most people feel better after 1 or 2 weeks. But for some people, the
flu leads to serious,
even life-threatening diseases, such as pneumonia. Influenza
vaccine (the flu shot) is recommended for people who are more likely to get really
sick to protect them from the flu.
Who is at higher risk?
Some people have a higher risk of flu complications, like pneumonia. If you are
in any of these groups, you should get the flu vaccine every year:
- All children aged 6 to 23 months
- All adults aged 65 years and older
- All women who are or will be pregnant during the flu season
- Residents in nursing homes and long-term care facilities
- Individuals aged 2 to 64 years who have long-term health problems
- Children aged 6 months to 18 years who are on chronic aspirin therapy
- Health care workers who have direct contact with patients
- Caregivers and household contacts of children less than 6 months of age
How can I avoid getting the flu?
The best way to avoid getting the flu is to get the influenza vaccine each fall,
before the flu season. The vaccine is available by shot or by nasal spray. The vaccines
work by exposing your immune system to the flu virus. Your body will build up antibodies
to the virus to protect you from getting the flu. The flu shot contains dead viruses.
The nasal-spray vaccine contains live but weakened viruses. You cannot get the flu
from the flu shot or the nasal-spray vaccine.
Some people who get the vaccine will still get the flu but they will usually get
a milder case than people who aren't vaccinated. The vaccine is especially recommended
for people who are more likely to get really sick from flu-related complications.
Is there anyone who shouldn't get the flu shot?
Yes. The following people should talk to their doctor before getting the flu shot:
- People who have had an allergic reaction to a flu shot in the past People with an
allergy to eggs
- People who previously developed Guillain-Barré Syndrome (a reversible reaction that
causes partial or complete loss of movement of muscles, weakness or a tingling sensation
in the body) within 6 weeks of getting a flu shot Is there anyone who shouldn't
get the nasal-spray vaccine? Yes. The following people should talk to their doctor
before getting the nasal-spray vaccine: Children less than 5 years of age Adults
50 years of age and older People with long-term health problems
- People with weakened immune systems Children aged 6 months to 18 years who are on
chronic asprin therapy People with a history of Guillain-Barré syndrome Pregnant
women People who have had an allergic reaction to a flu vaccine in the past or to
eggs
If I get the flu vaccine, can I still get the flu?
Yes. Even with a flu vaccine, you aren't 100% protected. Each year, the flu vaccine
contains 3 different strains (kinds) of the virus. The strains chosen are those that scientists believe are most likely to show up in the United States that year.
If the choice is right, the vaccine is 70% to 90% effective in preventing the flu
in healthy people under 65 years of age. If you're older than 65, the vaccine is
less likely to prevent the flu. Even if you get the flu after being vaccinated,
your flu symptoms should be milder than if you didn't get the vaccine. You'll also
be less likely to get complications from the flu.
Is the vaccine safe?
Yes. The flu vaccine is safe. There are very few side effects. If you got the flu
shot, your arm may be sore for a few days . You may have a fever, feel tired or
have sore muscles for a short time. If you got the nasal-spray vaccine, you may
have a runny nose, headache, cough or sore throat.
Can I get the flu vaccine if I am pregnant or nursing?
If you are pregnant during flu season, you cannot get the nasal-spray vaccine. However,
it is recommended that women who will be pregnant during flu season get the shot.
Pregnancy can increase your risk for complications from the flu. It is also safe
to get the flu shot while breast feeding your baby. The flu shot cannot cause you
or your nursing baby to get sick.
What are antiviral flu drugs?
Antiviral flu drugs are prescription medicines that can be used to help prevent
and/or treat the flu. There are four antiviral flu drugs: amantadine (one brand
name: Symmetrel), oseltamivir (brand name: Tamiflu), rimantadine (brand name: Flumadine)
and zanamavir (brand name: Relenza). All 4 of these antiviral drugs have been approved
to treat the flu. If you take one of these drugs within 2 days of getting sick,
it can lessen your symptoms,
decrease the amount of time you are sick and make you
less contagious to other people. However, most healthy people who have the flu get
better without using an antiviral flu drug. Your doctor will decide whether one
of these medicines is right for you.
Three of the antiviral flu drugs have also been approved to prevent the flu. These
drugs are not a substitute for the influenza vaccine. They are most often used for
flu prevention in institutions where people at high risk for flu complications are
in close contact with each other, such as nursing homes or hospitals. For example,
during a flu outbreak in a nursing home, residents and staff might be given the
flu vaccine and an antiviral drug to prevent the flu until the vaccine takes effect.
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