Can COVID vaccine have long term effects?

How Do We Know the COVID-19 Vaccine Won't Have Long-Term Side Effects? One of the reasons some people haven't signed up to receive the COVID-19 vaccine is that they're worried there might be unknown side effects that will show up months or years later.
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Are long-term side effects possible with COVID-19 vaccination?


Serious side effects that could cause a long-term health problem are extremely unusual following any vaccination, including COVID-19 vaccination. The benefits of COVID-19 vaccination outweigh the known and potential risks.

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


Fatigue and pain at the injection site were the most commonly reported side effects—and overall, most symptoms were mild and temporary. As with the two-dose primary series, serious side effects are rare, but may occur.

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Do people who have had COVID-19 have more side effects with the vaccine?

If you had COVID-19 before being vaccinated, the first injection may cause more noticeable side effects than for people who have not had the coronavirus. If you have never had COVID-19, you may notice more side effects after the second dose than after the first dose.

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PBS NewsHour full episode, June 30, 2022



Should I get the COVID-19 vaccine if I had COVID-19?

Yes, you should be vaccinated regardless of whether you already had COVID-19.
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Why do people who had COVID-19 have a strong reaction to the vaccine?


The next time you encounter the pathogen, these responses will kick in faster and stronger, because your immune system is already primed to recognise and respond to it. This is why people who have already recovered from COVID-19 may experience more of these mild reactions.

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


Commonly reported side effects in the clinical trial included injection site pain (sore arm), redness and swelling, fatigue, headache, muscle and/or joint pain, chills, fever, swollen lymph nodes, nausea and decreased appetite.

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What are the possible side effects of the Moderna and Pfizer COVID-19 vaccines?


Possible side effects: Pain, redness, or swelling at the site where the shot was administered, and/or tiredness, headache, muscle pain, chills, fever, or nausea throughout the rest of the body. If these side effects occur, they should go away in a few days. A few side effects are serious, but rare.

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


Common side effects include pain, redness and swelling at the injection site, tiredness, headache, muscle pain, chills, nausea, joint pain, and fever. Less common severe side effects include severe allergic reactions. See additional information on vaccine side effects for Pfizer-BioNTech, Moderna, and J&J.

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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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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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When do you feel side effects of Johnson and Johnson COVID-19 vaccine?


With most of the side effects occurring within one to two days following vaccination, Dr. Fryhofer recommends choosing a day or two when “you don't have a lot of important stuff going on, because you might not feel well.”

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Is guillain barre syndrome a possible side effect of the COVID-19 vaccine?


GBS is one of the possible side effects that might be encountered after the COVID‐19 vaccine. If it occurs, it appears to be responsive to the treatment, and the benefits of administering the vaccine outweigh the risks. The frequency of its occurrence is still needed to be studied.

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Does the COVID-19 vaccine cause Bell’s palsy?

Throughout the Moderna and Pfizer/BioNTech clinical trials, eight cases of Bell’s palsy — a type of rare, sudden muscle weakness in the face — were reported in total. Four of the cases were in the Pfizer vaccine group, three in the Moderna vaccine group, and one in the Moderna placebo group. The rate of Bell’s palsy incidence in the vaccine clinical trials was less than or equal to the rate of developing the condition in general. While there’s no evidence the cases were caused by the vaccine, they are considered an adverse event and will continue to be reported and monitored as a special interest adverse effect.

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Is it normal that I feel worse after second COVID-19 shot?


This is normal and expected, but it doesn't happen to everyone. Even if you feel worse after the second shot, the side effects should still resolve within a few days.

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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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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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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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When will my COVID-19 vaccine side effects go away?

Side effects can affect your ability to do daily activities, but they should go away in a few days.
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Is it possible to feel sick after a COVID-19 booster shot?

If you feel sick after the booster shot, it is normal and those symptoms should relieve themselves in a few days. Common side effects of the booster are similar to the vaccine: Fatigue. Fever.Chills Headache Pain at the injection site Side effects from the vaccine can be a sign that the vaccine is working.
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Can you still test positive after recovering from COVID-19?

According to the Centers for Disease Control and Prevention, some people who contract COVID-19 can have detectable virus for up to three months, but that doesn't mean they are contagious. When it comes to testing, however, the PCR tests are more likely to continue picking up the virus following infection.
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What to do if you get an allergic reaction from 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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Should I be concerned about the potential adverse reactions of COVID-19 vaccines?


The known risks of COVID-19 illness and its related, possibly severe complications, such as long-term health problems, hospitalization and even death, far outweigh the potential risks of having a rare adverse reaction to vaccination like myocarditis or blood clots.

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