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Doctor insights on: Influenza Vaccine Flu Shot

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Why do you have to get vaccinated with the influenza vaccine (flu vaccine) every year?

Why do you have to get vaccinated with the influenza vaccine (flu vaccine) every year?

Influenza vaccine: Influenza virus changes each year therefore every year new vaccines are made to cover the most likely circulating strains of the virus. ...Read more

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Flu Shot (Definition)

Also known as influenza vaccines, flu shots are given out once a year to protect against the flu. The flu shot stimulates the immune system to build antibodies to three or four strains of flu viruses in the hopes that it will offer protection from the current strains present in the community. Each year the Centers for Disease Control (CDC) monitors the strains of Influenza globally and incorporates the appropriate antigens in the new vaccine. For best protection the vaccine ...Read more


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Is it still recommended to get a flu shot and the swine flu vaccine?

Is it still recommended to get a flu shot and the swine flu vaccine?

H1N1 vaccine (swine): The most recent (last 2 yrs) have had the h1n1 strain as part of the regular flu shot in the us. There would be no benefit in seeking out older single strain h1n1. ...Read more

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Can someone tell me if the h1n1 (swine flu) vaccine is the only flu shot available now?

Can someone tell me if the h1n1 (swine flu) vaccine is the only flu shot available now?

Confusing question: The h1n1 is one of three or four strains in the flu vaccine prepared for the 2013-2014 season. It is also the predominant strain responsible for most serious cases of flu this year. The single strain h1n1 flu vaccine was only produces during the 2009 season when the strain emerged in the preseason(april) but was not in the regular vaccine produced that year. ...Read more

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How good are the preservative free flu vaccine?And what's the difference from the regular flu shot?

How good are the preservative free flu vaccine?And what's the  difference from the regular flu shot?

Any flu shot better : Than none. Thimerosal is preservative used in multi-dose vials of flu vaccines while single-dose vials are preservative free. Other than that, there is no difference between the actual active flu shot. The preservative is used to prevent contamination when a multi-dose vial is punctured several times. Check out http://www.Mayoclinic.Com/health/complex-regional-pain-syndrome/ds00265 for more info. ...Read more

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Had flu shot in mid november -- tested positive for influenza a after a very mild illness. How did i get the flu? Am 22 weeks pregnant.

Had flu shot in mid november -- tested positive for influenza a after a very mild illness. How did i get the flu? Am 22 weeks pregnant.

Aprox 80% effective: First the flu shot takes 3 weeks to build full immunity so next year take it late october this way when the season starts ( nov in the ne) you are ready. Influenza affects about 20% of the population an the vaccine gives about 80% immunity if correctly paired to the current strain. In your case you did get flu but had some immunity since it was mild. Stay hydrated! ...Read more

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Ok so I have the influenza B virus had flu shot so has my 5 year old so if she did contract it would symptoms be milder?

Ok so I have the influenza B virus had flu shot so has my 5 year old so if she did contract it would symptoms be milder?

MAYBE: Every year a number of flu strains circle the globe and various sites keep track and report their activity. Vaccine makers pick 3-4 strains in early spring to put in the fall shot, based on those with the most activity.Too many strains would weaken the individual strength against each strain.With luck, the vaccine will boost general flu immunity enough to make it mild for those who get it anyway ...Read more

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There are over 200 strains of the influenza virus. How many of those does the flu shot prevent?

There are over 200 strains of the influenza virus. How many of those does the flu shot prevent?

2014 – 2015 Flu Shot: Trivalent works against 3 influenza viruses – Influenza A viruses (H3N2 & H1N1) & 1 influenza B virus. Quadrivalent & the live attenuated Influenza vaccine work against these & a second influenza B virus. ...Read more

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I have never had the flu vaccine ever in life, I now have to have it for nursing school, will I get sick since this will be mu fist dose of the shot?

Hard to know: In my personal experience with giving flu shots to many people, some who have had them always and some who get the first one. You might experience a slight fever and achiness with the first shot, but if you get them every year the you don't notice anything. Consider this if you do get a little bit sick, it will not be anything like what you would feel if you get the actual flu. ...Read more

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Is the 2nd shot of flu vaccine still effective?

Is the 2nd shot of flu vaccine still effective?

2 dose flu vaccine: When 2 dose vaccination is used for children – the second dose should be administered 28 days after the first. Dose #1 “primes the immune system" & dose #2 provides the actual protection. ...Read more

Dr. Stephen Scholand
2 doctors shared insights

Influenza (Definition)

Influenza is a viral respiratory infection that causes cough, fever, chills, sore throat, muscle aches and headache. While most healthy people suffer few complications from the flu, it can be deadly for pregnant women, babies and children, the elderly and those with weak immune systems. That's why it's so important to get the flu shot to protect yourself ...Read more


Dr. Heidi Fowler
1,882 doctors shared insights

Flu (Definition)

The flu, otherwise known as influenza, is a viral infection of the nose and throat. Symptoms of influenza include fever, chills, runny nose, muscle aches, fatigue, malaise, headaches, and coughing. Children with the flu often have nausea and vomiting as well. Some strains of the flu are preventable by getting a yearly flu ...Read more