can you be contagious from the flu shot?
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MYTH: You can catch the flu from the vaccine. The flu shot is made from an inactivated virus that can't transmit infection. So people who get sick after receiving a flu vaccination were going to get sick anyway.
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Rarely, the flu vaccine can cause a severe allergic reaction. Severe allergic reactions usually happen within a few hours of receiving the vaccine. Symptoms include: hives.
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Studies have shown that the flu vaccine will help prevent you getting the flu. It will not stop all flu viruses and the level of protection may vary, so it's not a 100% guarantee that you'll be flu-free.
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The flu is “a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs,” according to the CDC, which says as many as 11% of Americans get it each season. It says symptoms include some or all of the following: Fever. Cough and sore throat.
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If these symptoms do occur, they will happen shortly after you receive your vaccination, and last for no longer than 1-2 days. Lastly, please keep in mind that the flu shot does not protect you against the “stomach flu” which can be described as vomiting, nausea, and diarrhea.
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Because they are not caused by influenza, the seasonal flu shot will not protect you from the “stomach flu.” Unfortunately, there isn't currently a vaccine for the viruses that cause “stomach flu.”
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Some people report having mild reactions to flu vaccination. The most common side effects from flu shots are soreness, redness, tenderness or swelling where the shot was given. Low-grade fever, headache and muscle aches also may occur. If these reactions occur, they usually begin soon after the shot and last 1-2 days.
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It may take one to four days after exposure to the influenza virus for symptoms to develop. If you have the flu, you'll be contagious one day before developing symptoms and up to five to seven days after becoming ill. Younger children or people with a weakened immune system may be contagious for longer.
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You can still get the flu vaccine if you have a mild illness, such as a cold or sinus infection. People who have a fever or a moderate or severe illness may need to delay vaccination until they've recovered.
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Flu vaccines cause antibodies to develop in the body about two weeks after vaccination. These antibodies provide protection against infection with the viruses that are in the vaccine. The seasonal flu vaccine protects against the influenza viruses that research indicates will be most common during the upcoming season.
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The Flu Shot Could Give You a Headache. In addition to muscle soreness, flu shots have been known to cause brain soreness, too — in other words, you could get a headache. While headaches are mildly uncomfortable, they're nowhere near as bad as the full onslaught of flu symptoms you're risking by skipping your vaccine.
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Period of Contagiousness People with flu are most contagious in the first 3-4 days after their illness begins. Some otherwise healthy adults may be able to infect others beginning 1 day before symptoms develop and up to 5 to 7 days after becoming sick.
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There are common side effects associated with the flu shot, but generally they are mild and primarily involve soreness, redness, swelling, and tenderness at the injection site. A low grade fever, headache, and muscle aches may occur. Such side effects last, at most, a couple of days.
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People with flu are most contagious in the first three to four days after their illness begins. Most healthy adults may be able to infect others beginning 1 day before symptoms develop and up to 5 to 7 days after becoming sick.
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You can still get the flu vaccine if you have a mild illness, such as a cold or sinus infection. People who have a fever or a moderate or severe illness may need to delay vaccination until they've recovered. If you're sick and are unsure if you should receive a flu shot, talk to your doctor about your symptoms.
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As the flu vaccine is squirted out of the applicator as a fine mist, that the school's rooms will be filled with flu vaccine virus which could infect others. several days or even weeks after vaccination, thus putting others at risk of infection, particularly those with weakened immune systems.
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Yes, it's safe to get a flu shot during pregnancy. In fact, the Centers for Disease Control and Prevention and the American College of Obstetricians and Gynecologists recommend that all women who are pregnant during flu season get a flu shot, regardless of their trimester.