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Physician Says Now Is the Best Time to Get Vaccinated Before Coming of the Flu Season

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"The time is now to get a flu shot," said Dr. Michael Koller, associate professor, Loyola University Chicago Stritch School of Medicine in Maywood, Ill.

The flu (or influenza) is a highly contagious viral infection that attacks the respiratory system. Doctors used to advise getting a flu shot only in October and November. Now doctors vaccinate through February because it takes about two weeks to develop an antibody response after the flu shot. For the last 30 years in the United States, February has been the peak month for illness.

"Flu is primarily spread by respiratory droplets," Koller said. "When somebody with influenza coughs or sneezes, out shoots this spray of flu virus that can infect anyone nearby. In addition to covering your mouth when you cough and covering your nose when you sneeze, it's really important to wash your hands."

Each year in the U.S. between five to 20 percent of the population contracts the flu. Symptoms include an abrupt onset of fever, chills, headaches, exhaustion, aching muscles and a constant, unproductive cough, Koller said,

Most people recover from the flu in a few days, although they may experience some fatigue for several weeks after, Koller said. However, for some people flu is a much more serious illness that requires hospitalization. In extreme cases, the flu can lead to pneumonia or death. About 36,000 Americans die and 200,000 are hospitalized from the flu each year.

"Once you have the flu, you never forget it," Koller said. "Usually those are the people you don't have to convince to get a flu shot because they never want to get it again."

What's new this year? For one, the Centers for Disease Control expanded the universal vaccination age for children from age 5 all the way up to age 18. So now, every child age 6 months through age 18 should get a yearly flu shot. Also, the vaccine is already here and widely available. In addition, there is more vaccine available than ever before. There are about 145 million doses available nationwide, and there are six different companies licensed to make influenza vaccine in the U.S. A few years ago, when there were only two companies making flu vaccine, there were shortages that lead to the rationing of flu shots. Not this year. There is no shortage and no delay in shipment.

Who else besides all children age 6 months to 18 years should get vaccinated against the flu? The CDC also recommends universal vaccinations for all people age 50 and older and anyone with a chronic illness such as asthma, diabetes or heart disease.

"People who have cancer, people who are immunosuppressed or people who are infected with HIV (the virus that causes AIDS), should also get a flu shot," Koller said.

A person who may not fall into an at-risk population but who lives with someone who does should also be vaccinated, Koller said. The other big group who should be vaccinated yearly is health-care workers. Anyone can have the flu and be contagious a day before you come down with all the classic symptoms of the flu. Because healthcare workers take care of frail patients who may not be able to fight off the flu, it is a matter of patient safety that healthcare workers get a flu shot every year.

For parent of young children who are worried about vaccines containing thimerosal, a preservative that contains mercury, Koller said that some of the flu shots no longer contain any thimerosal.

"The product that Loyola has doesn't have any thimerosal at all," Koller said.

Koller said, however, that any child under the age nine who is getting a flu shot for the first time will need a second or "booster" shot four weeks later. Parents often are unaware that their young child may need a second flu shot in the first year of vaccination.

Koller said that it's impossible to get the flu from getting a flu shot, which is a common misperception. However, he added that some will experience some side effects.

"Some people get soreness or pain at the site of the injection. A smaller number of people will feel achy and tired," Koller said. "But all of those side effects are usually gone after two days. If it's the first year that you've gotten the flu shot, you're more likely to get the side effects. In the subsequent years, you're much less likely to get them."

Bottom line, influenza is a serious illness that can be prevented by vaccination. Since there is no shortage of vaccine, anyone who wants to decrease their risk of contracting the flu this year should get a flu shot now.

About Influenza (Flu)

The flu is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. The best way to prevent the flu is by getting a flu vaccination each year.
Every year in the United States, on average:
  • 5% to 20% of the population gets the flu;
  • more than 200,000 people are hospitalized from flu complications; and
  • about 36,000 people die from flu.
Some people, such as older people, young children, and people with certain health conditions (such as asthma, diabetes, or heart disease), are at high risk for serious flu complications. Complications of flu can include bacterial pneumonia, ear infections, sinus infections, dehydration, and worsening of chronic medical conditions, such as congestive heart failure, asthma, or diabetes.
Symptoms of flu include:
  • fever (usually high)
  • headache
  • extreme tiredness
  • dry cough
  • sore throat
  • runny or stuffy nose
  • muscle aches
  • Stomach symptoms, such as nausea, vomiting, and diarrhea, also can occur but are more common in children than adults
Flu viruses spread mainly from person to person through coughing or sneezing of people with influenza. Sometimes people may become infected by touching something with flu viruses on it and then touching their mouth or nose. Most healthy adults may be able to infect others beginning 1 day before symptoms develop and up to 5 days after becoming sick. This means that you are able to infect someone before you know you are sick with the flu, as well as while you are sick with the flu.
The single best way to prevent the flu is to get a flu vaccination each year. About two weeks after vaccination, antibodies develop that protect against influenza virus infection. There are two types of vaccines:
  • The nasal-spray flu vaccine - a vaccine made with live, weakened flu viruses that do not cause the flu (sometimes called LAIV for "Live Attenuated Influenza Vaccine"). Vaccination with the nasal-spray flu vaccine is an option for healthy* people 2-49 years of age who are not pregnant, even healthy persons who live with or care for those in a high risk group. The one exception is healthy persons who care for persons with severely weakened immune systems who require a protected environment; these healthy persons should get the inactivated vaccine.
  • The "flu shot" - an inactivated vaccine (containing killed virus) that is given with a needle. The flu shot is approved for use in people 6 months of age and older, including healthy people and people with chronic medical conditions.
In general, anyone who wants to reduce their chances of getting the flu can get vaccinated. However, certain people should get vaccinated each year either because they are at high risk of having serious flu-related complications or because they live with or care for high risk persons. During flu seasons when vaccine supplies are limited or delayed, the Advisory Committee on Immunization Practices (ACIP) makes recommendations regarding priority groups for vaccination.
People who should get vaccinated each year are:
  1. Children aged 6 months up to their 19th birthday
  2. Pregnant women
  3. People 50 years of age and older
  4. People of any age with certain chronic medical conditions
  5. People who live in nursing homes and other long-term care facilities
  6. People who live with or care for those at high risk for complications from flu, including:
      a.   Health care workers
      b.   Household contacts of persons at high risk for complications from the flu
      c.   Household contacts and out of home caregivers of children less than 6 months of age (these children are too young to be vaccinated)
Some people should not be vaccinated without first consulting a physician. They include:
  • People who have a severe allergy to chicken eggs.
  • People who have had a severe reaction to an influenza vaccination in the past.
  • People who developed  Guillain-Barré syndrome (GBS) within 6 weeks of getting an influenza vaccine previously.
  • Children less than 6 months of age (influenza vaccine is not approved for use in this age group).
  • People who have a moderate or severe illness with a fever should wait to get vaccinated until their symptoms lessen.

If you have questions about whether you should get a flu vaccine, consult your health-care provider.

*Content Source: Coordinating Center for Infectious Diseases (CCID)

Last modified on Thursday, 03 December 2009 15:06
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