What should I do if I am allergic to the COVID-19 vaccine?

If you get a COVID-19 vaccine and you think you might be having a severe allergic reaction after leaving the vaccination provider site, seek immediate medical care by calling 911.
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Can the Moderna COVID-19 vaccine cause allergic reactions?

There is a remote chance that the Moderna COVID-19 Vaccine could cause a severe allergic
reaction. A severe allergic reaction would usually occur within a few minutes to one hour after
getting a dose of the Moderna COVID-19 Vaccine. For this reason, your vaccination provider
may ask you to stay at the place where you received your vaccine for monitoring after
vaccination. Signs of a severe allergic reaction can include:
• Difficulty breathing
• Swelling of your face and throat
• A fast heartbeat
• A bad rash all over your body
• Dizziness and weakness

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How soon does anaphylaxis happen after COVID-19 vaccine?

Symptoms of anaphylaxis often occur within 15-30 minutes of vaccination, though it can sometimes take several hours for symptoms to appear.
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What are the severe allergic reactions to COVID-19 mRNA vaccines?


“Overall, severe allergic reactions to COVID-19 mRNA vaccines, including life-threatening anaphylaxis reactions such as low blood pressure and difficulty breathing, are rare, on the order of five cases per million vaccine doses administered,” noted Dr. Guerrerio.

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Should I take an antihistamine before the COVID-19 vaccine?

It is also not recommended to take antihistamines before getting a COVID-19 vaccine to try to prevent allergic reactions.
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What medications should be avoided before the COVID-19 vaccine?

It is not recommended you take over-the-counter medicine – such as ibuprofen, aspirin, or acetaminophen – before vaccination for the purpose of trying to prevent vaccine-related side effects.
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What are some medications that are safe to take with the COVID-19 vaccine?

Taking one of the following medications is not, on its own, a reason to avoid getting your COVID-19 vaccination:

• Over-the-counter medications (non-prescription)
• Non-steroidal anti-inflammatory drugs (NSAIDs) (naproxen, ibuprofen, aspirin, etc.)
• Acetaminophen (Tylenol, etc.)

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Are there any safety concerns concerning mRNA technology of the Pfizer-BioNTech COVID-19 Vaccine?

FDA does not have specific safety concerns with a vaccine that utilizes this technology.

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Do mRNA COVID-19 vaccines cause heart inflammation?


These cases typically occur in male adolescents and young adults after the second dose, and within a week of vaccination. It is important to seek medical care if symptomatic (chest pain, shortness of breath, having a fast beating, fluttering, or pounding heart).

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Are mRNA COVID-19 vaccines safe?


mRNA vaccines are safe and effective.
mRNA vaccines have been held to the same rigorous safety and effectiveness standards as all other types of vaccines in the United States.

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How do you know if you are allergic to the COVID-19 vaccine?

An immediate allergic reaction happens within 4 hours after getting vaccinated and could include symptoms such as hives, swelling, and wheezing (respiratory distress).
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When do COVID-19 vaccine side effects appear?


You probably experienced COVID-19 vaccine side effects fairly quickly when you had your initial injections. The same is true for COVID-19 vaccine booster shots: Most people notice side effects within the first 24 hours. The symptoms typically only last a day or two. Some people don't notice any side effects.

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How long does it take on average for COVID-19 symptoms to appear?

People with COVID-19 have had a wide range of symptoms reported – ranging from mild symptoms to severe illness. Symptoms may appear 2-14 days after exposure to the virus.
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What are the possible side effects of the Moderna COVID-19 vaccine?


Possible side effects: Pain, redness, swelling in the arm where the shot was administered; tiredness, headache, muscle pain, chills, fever, nausea throughout the rest of the body. If any of these side effects occur, they should go away in a few days.

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Is it normal to get a rash after receiving the COVID-19 vaccine?

Skin problems such as itchiness, rashes, hives and swelling can occur in some individuals after receiving a COVID-19 vaccine, but it's not clear how common these reactions are or how frequently they recur with a subsequent vaccination.
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What are some of the possible differences between allergy symptoms and COVID-19 symptoms?


Symptoms that are typically indicative of Covid-19 (but not allergies) include fever, body aches, and loss of smell or taste. In addition, Covid-19 patients are also more likely to feel short of breath, while those with seasonal allergies will not usually experience this symptom unless they also have asthma.

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What are the average ages of people who had myocarditis after mRNA-based COVID-19 vaccination during the first 8 months of 2021?

Of the 1626 reports that met the CDCs case definition for myocarditis, 1195 (73%) were younger than 30 years of age, 543 (33%) were younger than 18 years of age, and the median age was 21 years (IQR, 16-31 years) (Figure 1).
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Can I get myocarditis if I have COVID-19?


Myocarditis is uncommon among patients with and without COVID-19; however, COVID-19 is a strong and significant risk factor for myocarditis, with risk varying by age group.

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Can COVID-19 cause heart inflammation?


Viruses are a common cause of heart inflammation – known as myocarditis – and the coronavirus is no different. The Centers for Disease Control and Prevention reported in September research showing patients with COVID-19 had nearly 16 times the risk of myocarditis compared with patients without COVID-19.

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Is it safe to take the Moderna, Pfizer-BioNTech, or J&J COVID-19 vaccine during pregnancy?

No safety concerns were found in animal studies: Studies in animals receiving a Moderna, Pfizer-BioNTech, or Johnson & Johnson (J&J)/Janssen COVID-19 vaccine before or during pregnancy found no safety concerns in pregnant animals or their babies.
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Do COVID-19 mRNA vaccines have long-term effects?


The Pfizer and Moderna vaccines were created using messenger RNA (or mRNA) technology, which has been used for about 10 years in cancer treatment, with no long-term effects detected. And even before that, scientists had been working with mRNA technology for years. 3. mRNA technology does not alter your DNA.

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Is the Pfizer COVID-19 vaccine safe?


Pfizer-BioNTech COVID-19 Vaccine Ingredients. All COVID-19 vaccine ingredients are safe. Nearly all of the ingredients in COVID-19 vaccines are ingredients found in many foods – fats, sugars, and salts. The Pfizer-BioNTech COVID-19 vaccine (COMIRNATY) also contains a harmless piece of messenger RNA (mRNA).

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Do I need to discontinue my medications after receiving the COVID-19 vaccine?

For most people, it is not recommended to avoid, discontinue, or delay medications that you are routinely taking for prevention or treatment of other medical conditions around the time of COVID-19 vaccination.
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Is it safe to take Tylenol or Ibuprofen before a COVID-19 vaccine?

Because of the lack of high-quality studies on taking NSAIDs or Tylenol before getting a vaccine, the CDC and other similar health organizations recommend not taking Advil or Tylenol beforehand.
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Can you take Tylenol or Advil after receiving the COVID-19 vaccine?

Yes, it's perfectly fine to take Tylenol or Advil after the COVID-19 vaccine. This is recommended by experts because it can help ease the side effects you might experience.

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