What are some of the risks of the COVID-19 vaccine?

Author: Geraldine Stanton  |  Last update: Tuesday, January 18, 2022

COVID-19
Common question

What are some of the risks of the COVID-19 vaccine?

While COVID-19 vaccines are working well, some people who are fully vaccinated against COVID-19 will still get sick, because no vaccines are 100% effective. These are called vaccine breakthrough cases.

Are there any long-term effects of COVID-19 vaccine?

Serious side effects that could cause a long-term health problem are extremely unlikely following any vaccination, including COVID-19 vaccination. Vaccine monitoring has historically shown that side effects generally happen within six weeks of receiving a vaccine dose.

Is the COVID-19 vaccine safe for everyone?

• COVID-19 vaccines are safe and effective.
• Millions of people in the United States have received COVID-19 vaccines under the most intense safety monitoring in U.S. history.
• CDC recommends you get a COVID-19 vaccine as soon as possible.

What are the common side effects of the COVID-19 vaccine?

The most commonly reported side effects were pain at the injection site, tiredness, headache, muscle pain, chills, joint pain, and fever.

Who should not get the Moderna COVID-19 vaccine?

If you have had a severe allergic reaction (anaphylaxis) or an immediate allergic reaction, even if it was not severe, to any ingredient in an mRNA COVID-19 vaccine (such as polyethylene glycol), you should not get an mRNA COVID-19 vaccine.

Should you get the Covid vaccine if you have an autoimmune disease?

The American College of Rheumatology COVID-19 Vaccine Clinical Guidance recommends that people with autoimmune and inflammatory rheumatic disease (which includes lupus) get the vaccine unless they have an allergy to an ingredient in the vaccine.

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.

What are the common side effects of the Pfizer-BioNtech COVID-19 vaccine?

The most commonly reported side effects were pain at the injection site, tiredness, headache, muscle pain, chills, joint pain, and fever. Side effects typically started within two days of vaccination and resolved 1-2 day later.

Is it normal to have side effects after second COVID-19 vaccine?

Side effects after your second shot may be more intense than the ones you experienced after your first shot. These side effects are normal signs that your body is building protection and should go away within a few days.

How soon do side effects start after COVID-19 vaccine booster?

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.

Should I get vaccinated against COVID-19?

  • COVID-19 vaccines are safe and effective.
  • Millions of people in the United States have received COVID-19 vaccines under the most intense safety monitoring in U.S. history.
  • CDC recommends you get a COVID-19 vaccine as soon as you are eligible.

Is it normal if you react to the COVID-19 vaccine?

Minor side effects are a normal sign that the immune system is mounting a protective response following vaccination, although they aren't universal.

Why do I not have a reaction to COVID-19 vaccine?

It's likely related to variations in the immune system and its response, which may be influenced by things like age, genetics or underlying medical conditions.

What are some of the potential long-term effects of COVID-19?


Known as post-acute sequelae of SARS-CoV-2 infection (PASC), or more commonly as Long COVID, these conditions affect all ages. Long-term effects include fatigue, shortness of breath, difficulty concentrating, sleep disorders, fevers, anxiety and depression.

Does the COVID-19 booster have side effects?

Symptoms of the booster appear to largely mirror how people felt after their second dose, according to the U.S. Centers for Disease Control and Prevention. The most commonly reported symptoms after the third shot include arm pain, fatigue and headache. The side effects were mostly considered mild or moderate.

What are some of the lingering side effects of COVID-19?

A full year has passed since the COVID-19 pandemic began, and the mind-boggling aftermath of the virus continues to confuse doctors and scientists. Particularly concerning for doctors and patients alike are lingering side effects, such as memory loss, reduced attention and an inability to think straight.

How long do side effects last after the COVID-19 booster shot?

They're very similar to what happens after the second dose, which is that you do tend to get pain at the injection site, usually just lasts a few days, and usually it's not severe. And then you can get systemic side effects such as fever, fatigue, headache, and again, that usually goes away after a day or two.

Is it normal for the second Pfizer COVID-19 vaccine to cause arm pain?


As with all two-dose vaccines, those getting either Pfizer's or Moderna's COVID-19 vaccination are more likely to experience arm pain after the second dose. This side effect is also more common if you are under 65 years old.

What are some common side effects of the Pfizer & Moderna COVID-19 booster shot?

The most common side effects reported after getting a third shot of an mRNA vaccine, the type made by Moderna and Pfizer, were pain at the injection site, fatigue, muscle pain, headache and fever, followed by chills and nausea.

What are some common side effects of the Pfizer & Moderna COVID-19 booster shot?

The most common side effects reported after getting a third shot of an mRNA vaccine, the type made by Moderna and Pfizer, were pain at the injection site, fatigue, muscle pain, headache and fever, followed by chills and nausea.

What is the most common allergic reaction to COVID-19 vaccine?

Learn about common side effects of COVID-19 vaccines and when to call a doctor. An immediate allergic reaction means a reaction within 4 hours of getting vaccinated, including symptoms such as hives, swelling, or wheezing (respiratory distress).

What happens if you take Tylenol before the COVID-19 vaccine?


Studies have shown that Tylenol (acetaminophen) and NSAIDs might have some effect on how the immune system works, but we don't know if this would cause COVID-19 vaccines to be less effective. To be extra cautious, it's best to avoid taking OTC pain relievers before you get your shot.

Is it safe to take aspirin while taking the COVID-19 vaccine?

• If you take daily aspirin for cardiovascular or cerebrovascular protection do not skip your aspirin because of your COVID vaccine

What pain medication can I take after the COVID-19 vaccine?

The Centers for Disease Control says that you can take over-the-counter pain medicine, such as ibuprofen (like Advil), aspirin, antihistamines or acetaminophen (like Tylenol), if you have side effects after getting vaccinated for Covid. As with any medication, the CDC recommends talking to your doctor first.

Are you at risk of experiencing an autoimmune disease flare-up from COVID-19 vaccine?

There is a risk that flare-ups may occur. That being said, it has been observed that people living with autoimmune and inflammatory conditions are at higher risk of experiencing severe symptoms from a COVID-19 infection.

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