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Doctor insights on: Can You Catch The Flu From Someone Who Just Had The Flu Shot

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Can you catch the flu from someone who just had the flu shot?

Can you catch the flu from someone who just had the flu shot?

Not usually: The're two kinds of flu vaccines. One is a weakened live virus vaccine given in a nasal form (nasal shot). There is a mild risk of getting the flu from someone who had a nasal flu shot, especially if those around have poor immune system. The other vaccine is made from particles of a dead virus. It is commonly given as a shot into the muscle. One and others around cannot get the flu from this. ...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 possible for me to catch the flu from someone who got a flu shot?

Maybe: There are different types if flu vaccine. The ones given with needles. ( shots ) are made of inactivated flu peices. These cannot produce disease therefore could not get you sick. Flumist is a nasal spray vaccine that contains live virus capable of spreading and causing you (or others) to rarely get sick as well. ...Read more

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What happens if I get a flu shot can my wife catch the flu?

What happens if I get a flu shot can my wife catch the flu?

No: The flu shot vaccine is not a live virus. You can not get the flu, nor transmit the flu to someone else from the shot. ...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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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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Dr. Tony Ho Dr. Ho
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My 22mo had his flu shot. Now, I have the flu. I didn't get a shot. How much risk is there that he can still catch it from me?

Dr. Tony Ho Dr. Ho
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My 22mo had his flu shot.  Now, I have the flu. I didn't get a shot. How much risk is there that he can still catch it from me?

Depends on strain: It all depends on which strain you have and if that is included in the flu vaccine. Also, it depends on how long ago your child had the vaccine; if it has been over 2 weeks, he should have a reasonable amount of immunity to the strains covered. I would advise religious hand washing and covering of your mouth around him until you have broken your fever for > 24 hours. ...Read more

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My daugter just had the flu shot and now has a rash....Small red dots all over body?

My daugter just had the flu shot and now has a rash....Small red dots all over body?

This can be normal: If the child is acting normal and feels well, this could be a post viral exanthem. This is a rash that starts in the middle of the torso, abdomen, even the neck and spreads to the rest of the body. Your physician needs to see it to make sure. But if your child is afebrile and looking good, this would be likley. ...Read more

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I got the flu shot 9 days ago and came within 6ft of someone who had the flu and was coughing. Am I protected enough at this point?

I got the flu shot 9 days ago and came within 6ft of someone who had the flu and was coughing. Am I protected enough at this point?

Flu: The best protection from the flu is getting immunized, avoiding sick people, hand-washing, getting adequate rest and fluids. If you have a healthy immune system, you should be protected. ...Read more

Dr. Ana Adelstein
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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
1,889 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